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the
     1. art. Definite grammatical article that implies necessarily that an entity it articulates is presupposed; something already mentioned, or completely specified later in that same sentence, or assumed already
           I’m reading the book. (Compare I’m reading a book.)
           The street in front of your house. (Compare A street in Paris.)
           The men and women watched the man give the birdseed to the bird.
     2. art.          Used before a noun modified by a restrictive relative clause, indicating that the noun refers to a single referent defined by the relative clause.
                    The street that runs through my hometown.
     3. art. Used before an object considered to be unique, or of which there is only one at a time.
           No one knows how many galaxies there are in the universe.
           God save the Queen!
     4. art. Used before a superlative or an ordinal number modifying a noun, to indicate that the noun refers to a single item.
           That was the best apple pie ever.
     5. art.          Added to a superlative or an ordinal number to make it into a substantive.
                    That apple pie was the best.
     6. art. Introducing a singular term to be taken generically: preceding a name of something standing for a whole class.
     7. art. Used before an adjective, indicating all things (especially persons) described by that adjective.
           Feed the hungry, clothe the naked, comfort the afflicted, and afflict the comfortable.
     8. art. Used to indicate a certain example of (a noun) which is usually of most concern or most common or familiar.
           No one in the whole country had seen it before.
           I don't think I'll get to it until the morning.
     9. art. Used before a body part (especially of someone previously mentioned), as an alternative to a possessive pronoun.
           A stone hit him on the head. (= “A stone hit him on his head.”)
     10. art. When stressed, indicates that it describes an object which is considered to be best or exclusively worthy of attention.
           That is the hospital to go to for heart surgery.
     11. adv. 1=With a comparative ormore and a verb phrase, establishes a parallel with one or more other such comparatives.
           The hotter the better.
           The more I think about it, the weaker it looks.
           The more money donated, the more books purchased, and the more happy children.
           It looks weaker and weaker, the more I think about it.
     12. adv. 1=With a comparative, and often withfor it, indicates a result more like said comparative. This can be negated withnone.
           It was a difficult time, but I’m the wiser for it.
           It was a difficult time, and I’m none the wiser for it.
           I'm much the wiser for having had a difficult time like that.
proximity
     1. n. Closeness; the state of being near as in space, time, or relationship.
           The proximity of the heat source allowed it to be detected by the sensor.
of
     1. prep. Expressing distance or motion.
     2. prep.          (now obsolete, or dialectal) From (of distance, direction), "off".
     3. prep.          (obsolete except in phrases) Since, from (a given time, earlier state etc.).
     4. prep.          From, away from (a position, number, distance etc.).
                    There are no shops within twenty miles of the cottage.
     5. prep.          (North America, Scotland, Ireland) Before (the hour); to.
                    What's the time? / Nearly a quarter of three.
     6. prep. Expressing separation.
     7. prep.          (Indicating removal, absence or separation, with the action indicated by a transitive verb and the quality or substance by a grammatical object.)
                    Finally she was relieved of the burden of caring for her sick husband.
     8. prep.          (Indicating removal, absence or separation, with resulting state indicated by an adjective.)
                    He seemed devoid of human feelings.
     9. prep.          (obsolete) (Indicating removal, absence or separation, construed with an intransitive verb.)
     10. prep. Expressing origin.
     11. prep.          (Indicating an ancestral source or origin of descent.)
                    The word is believed to be of Japanese origin.
     12. prep.          (Indicating a (non-physical) source of action or emotion; introducing a cause, instigation); from, out of, as an expression of.
                    The invention was born of necessity.
     13. prep.          (following an intransitive verb) (Indicates the source or cause of the verb.)
                    It is said that she died of a broken heart.
     14. prep.          (following an adjective) (Indicates the subject or cause of the adjective.)
                    I am tired of all this nonsense.
     15. prep. Expressing agency.
     16. prep.          (following a passive verb) (Indicates the agent (for most verbs, now usually expressed with by).)
                    I am not particularly enamoured of this idea.
     17. prep.          (Used to introduce the "subjective genitive"; following a noun to form the head of a postmodifying noun phrase) (see also 'Possession' senses below).
                    The contract can be terminated at any time with the agreement of both parties.
     18. prep.          (following an adjective) (Used to indicate the agent of something described by the adjective.)
                    It was very brave of you to speak out like that.
     19. prep. Expressing composition, substance.
     20. prep.          (after a verb expressing construction, making etc.) (Used to indicate the material or substance used.)
                    Many 'corks' are now actually made of plastic.
     21. prep.          (directly following a noun) (Used to indicate the material of the just-mentioned object.)
                    She wore a dress of silk.
     22. prep.          (Indicating the composition of a given collective or quantitative noun.)
                    What a lot of nonsense!
     23. prep.          (Used to link a given class of things with a specific example of that class.)
                   Welcome to the historic town of Harwich.
     24. prep.          (Links two nouns in near-apposition, with the first qualifying the second); "which is also".
                    I'm not driving this wreck of a car.
     25. prep. Introducing subject matter.
     26. prep.          (Links an intransitive verb, or a transitive verb and its subject (especially verbs to do with thinking, feeling, expressing etc.), with its subject-ma
                    I'm always thinking of you.
     27. prep.          (following a noun (now chiefly nouns of knowledge, communication etc.)) (Introduces its subject matter); about, concerning.
                    He told us the story of his journey to India.
     28. prep.          (following an adjective) (Introduces its subject matter.)
                    This behaviour is typical of teenagers.
     29. prep. Having partitive effect.
     30. prep.          (following a number or other quantitive word) (Introduces the whole for which is indicated only the specified part or segment); "from among".
                    Most of these apples are rotten.
     31. prep.          (following a noun) (Indicates a given part.)
     32. prep.          (now archaic, literary, with preceding partitive word assumed, or as a predicate after to be) Some, an amount of, one of.
                    On the whole, they seem to be of the decent sort.
     33. prep.          (Links to a genitive noun or possessive pronoun, with partitive effect (though now often merged with possessive senses, below).)
                    He is a friend of mine.
     34. prep. Expressing possession.
     35. prep.          Belonging to, existing in, or taking place in a given location, place or time. Compare "origin" senses, above.
                    He was perhaps the most famous scientist of the twentieth century.
     36. prep.          Belonging to (a place) through having title, ownership or control over it.
                    The owner of the nightclub was arrested.
     37. prep.          Belonging to (someone or something) as something they possess or have as a characteristic; (the "possessive genitive". (With abstract nouns, this inter
                    Keep the handle of the saucepan away from the flames.
     38. prep. Forming the "objective genitive".
     39. prep.          (Follows an agent noun, verbal noun or noun of action.)
                    She had a profound distrust of the police.
     40. prep. Expressing qualities or characteristics.
     41. prep.          (now archaic, or literary) (Links an adjective with a noun or noun phrase to form a quasi-adverbial qualifier); in respect to, as regards.
                    My companion seemed affable and easy of manner.
     42. prep.          (Indicates a quality or characteristic); "characterized by".
                    Pooh was said to be a bear of very little brain.
     43. prep.          (Indicates quantity, age, price, etc.)
                    We have been paying interest at a rate of 10%.
     44. prep.          (US, informal considered incorrect by some) (Used to link singular indefinite nouns (preceded by the indefinite article) and attributive adjectives mod
                    It's not that big of a deal.
     45. prep. Expressing a point in time.
     46. prep.          (chiefly regional) During the course of (a set period of time, day of the week etc.), now specifically with implied repetition or regularity.
                    Of an evening, we would often go for a stroll along the river.
     47. prep.          (UK dialectal, chiefly in negative constructions) For (a given length of time).
                    I've not tekken her out of a goodly long while.
     48. prep.          (after a noun) (Indicates duration of a state, activity etc.)
                    After a delay of three hours, the plane finally took off.
the
     1. art. Definite grammatical article that implies necessarily that an entity it articulates is presupposed; something already mentioned, or completely specified later in that same sentence, or assumed already
           I’m reading the book. (Compare I’m reading a book.)
           The street in front of your house. (Compare A street in Paris.)
           The men and women watched the man give the birdseed to the bird.
     2. art.          Used before a noun modified by a restrictive relative clause, indicating that the noun refers to a single referent defined by the relative clause.
                    The street that runs through my hometown.
     3. art. Used before an object considered to be unique, or of which there is only one at a time.
           No one knows how many galaxies there are in the universe.
           God save the Queen!
     4. art. Used before a superlative or an ordinal number modifying a noun, to indicate that the noun refers to a single item.
           That was the best apple pie ever.
     5. art.          Added to a superlative or an ordinal number to make it into a substantive.
                    That apple pie was the best.
     6. art. Introducing a singular term to be taken generically: preceding a name of something standing for a whole class.
     7. art. Used before an adjective, indicating all things (especially persons) described by that adjective.
           Feed the hungry, clothe the naked, comfort the afflicted, and afflict the comfortable.
     8. art. Used to indicate a certain example of (a noun) which is usually of most concern or most common or familiar.
           No one in the whole country had seen it before.
           I don't think I'll get to it until the morning.
     9. art. Used before a body part (especially of someone previously mentioned), as an alternative to a possessive pronoun.
           A stone hit him on the head. (= “A stone hit him on his head.”)
     10. art. When stressed, indicates that it describes an object which is considered to be best or exclusively worthy of attention.
           That is the hospital to go to for heart surgery.
     11. adv. 1=With a comparative ormore and a verb phrase, establishes a parallel with one or more other such comparatives.
           The hotter the better.
           The more I think about it, the weaker it looks.
           The more money donated, the more books purchased, and the more happy children.
           It looks weaker and weaker, the more I think about it.
     12. adv. 1=With a comparative, and often withfor it, indicates a result more like said comparative. This can be negated withnone.
           It was a difficult time, but I’m the wiser for it.
           It was a difficult time, and I’m none the wiser for it.
           I'm much the wiser for having had a difficult time like that.
heat
     1. n. Thermal energy.
           This furnace puts out 5000 BTUs of heat.   That engine is really throwing off some heat.   Removal of heat from the liquid caused it to turn into a solid.
     2. n. The condition or quality of being hot.
           Stay out of the heat of the sun!
     3. n. An attribute of a spice that causes a burning sensation in the mouth.
           The chili sauce gave the dish heat.
     4. n. A period of intensity, particularly of emotion.
           It's easy to make bad decisions in the heat of the moment.
     5. n. An undesirable amount of attention.
           The heat from her family after her DUI arrest was unbearable.
     6. n. (slang) The police.
           The heat! Scram!
     7. n. (slang) One or more firearms.
     8. n. (baseball) A fastball.
           The catcher called for the heat, high and tight.
     9. n. A condition where a mammal is aroused sexually or where it is especially fertile and therefore eager to mate.
           The male canines were attracted by the female in heat.
     10. n. A preliminary race, used to determine the participants in a final race
           The runner had high hopes, but was out of contention after the first heat.
     11. n. One cycle of bringing metal to maximum temperature and working it until it is too cool to work further.
           I can make a scroll like that in a single heat.
     12. n. A hot spell.
           The children stayed indoors during this year's summer heat.
     13. n. Heating system; a system that raises the temperature of a room or building.
           I'm freezing; could you turn on the heat?
     14. n. The output of a heating system.
           During the power outage we had no heat because the controls are electric.   Older folks like more heat than the young.
     15. v. To cause an increase in temperature of an object or space; to cause something to become hot (often with "up").
           I'll heat up the water.
     16. v. To excite or make hot by action or emotion; to make feverish.
     17. v. To excite ardour in; to rouse to action; to excite to excess; to inflame, as the passions.
     18. v. To arouse, to excite (sexually).
           The massage heated her up.
source
     1. n. The person, place or thing from which something (information, goods, etc.) comes or is acquired.
           The accused refused to reveal the source of the illegal drugs she was selling.
     2. n. Spring; fountainhead; wellhead; any collection of water on or under the surface of the ground in which a stream originates.
           The main sources of the Euphrates River are the Karasu and Murat Rivers.
     3. n. A reporter's informant.
     4. n. (computing) Source code.
     5. n. (electronics) The name of one terminal of a field effect transistor (FET).
     6. v. (chiefly US) To obtain or procure: used especially of a business resource.
     7. v. To find information about (a quotation)'s source (from which it comes): to find a citation for.
allowed
     1. v. simple past tense and past participle of allow
     allow
          1. v. To grant, give, admit, accord, afford, or yield; to let one have.
                to allow a servant his liberty;  to allow a free passage;  to allow one day for rest
          2. v. To acknowledge; to accept as true; to concede; to accede to an opinion.
                to allow a right;  to allow a claim;  to allow the truth of a proposition
          3. v. To grant (something) as a deduction or an addition; especially to abate or deduct.
                To allow a sum for leakage.
          4. v. To grant license to; to permit; to consent to.
                To allow a son to be absent.
                Smoking allowed only in designated areas.
          5. v. To not bar or obstruct.
                Although I don't consent to their holding such meetings, I will allow them for the time being.
          6. v. (intransitive) To acknowledge or concede.
          7. v. To take into account by making an allowance.
                When calculating a budget for a construction project, always allow for contingencies.
          8. v. To render physically possible.
          9. v. (transitive, obsolete) To praise; to approve of; hence, to sanction.
          10. v. (obsolete) To sanction; to invest; to entrust.
          11. v. (transitive, obsolete) To like; to be suited or pleased with.
it
     1. pron. The third-person singular personal pronoun that is normally used to refer to an inanimate object or abstract entity, also often used to refer to animals.
           Put it over there.
           Take each day as it comes.
           I heard the sound of the school bus - it was early today.
     2. pron. A third-person singular personal pronoun used to refer to a child, especially of unknown gender.
           She took the baby and held it in her arms.
     3. pron. Used to refer to someone being identified, often on the phone, but not limited to this situation.
           It's me. John.
           Is it her?
     4. pron. The impersonal pronoun, used without referent as the subject of an impersonal verb or statement. (known as the dummy pronoun or weather it)
           It is nearly 10 o’clock.
           It’s 10:45 read ten-forty-five.
           It’s very cold today.
           It’s lonely without you.
     5. pron. The impersonal pronoun, used without referent in various short idioms.
           stick it out
           live it up
           rough it
     6. pron. The impersonal pronoun, used as a placeholder for a delayed subject, or less commonly, object; known as the dummy pronoun or, more formally in linguistics, a syntactic expletive. The delayed subject i
           It is easy to see how she would think that. (with the infinitive clause headed by to see)
           I find it odd that you would say that. (with the noun clause introduced by that)
           It is hard seeing you so sick. (with the gerund seeing)
           He saw to it that everyone would vote for him. (with the noun clause introduced by that)
           It is not clear if the report was true. (with the noun clause introduced by if)
     7. pron. All or the end; something after which there is no more.
           Are there more students in this class, or is this it?
           That's it—I'm not going to any more candy stores with you.
     8. pron. (chiefly pejorative, offensive) A third-person singular personal pronoun used to refer to an animate referent who is transgender or is neither female nor male.
     9. pron. (obsolete) (Followed by an omitted and understood relative pronoun): That which; what.
     10. det. (obsolete) its
     11. n. One who is neither a he nor a she; a creature; a dehumanized being.
     12. n. The person who chases and tries to catch the other players in the playground game of tag.
           In the next game, Adam and Tom will be it…
     13. n. (British) The game of tag.
           Let's play it at breaktime.
     14. n. Sex appeal, especially that which goes beyond beauty.
     15. n. (euphemism) Sexual activity.
           caught them doing it
     16. adj. (colloquial) Most fashionable.
to
     1. part. A particle used for marking the following verb as an infinitive.
           I want to leave.
           He asked me what to do.
           I don’t know how to say it.
           I have places to go and people to see.
     2. part. As above, with the verb implied.
           "Did you visit the museum?" "I wanted to, but it was closed.".
           If he hasn't read it yet, he ought to.
     3. part. A particle used to create phrasal verbs.
           I have to do laundry today.
     4. prep. Indicating destination: In the direction of, and arriving at.
           We are walking to the shop.
     5. prep. Used to indicate purpose.
           He devoted himself to education.
           They drank to his health.
     6. prep. Used to indicate result of action.
           His face was beaten to a pulp.
     7. prep. Used after an adjective to indicate its application.
           similar to ..., relevant to ..., pertinent to ..., I was nice to him, he was cruel to her, I am used to walking.
     8. prep. (obsolete,) As a.
           With God to friend (with God as a friend);   with The Devil to fiend (with the Devil as a foe);   lambs slaughtered to lake (lambs slaughtered as a sacrifice);   t
     9. prep. (arithmetic) Used to indicate a ratio or comparison.
           one to one = 1:1
           ten to one = 10:1.
           I have ten dollars to your four.
     10. prep. (arithmetic) Used to indicate that the preceding term is to be raised to the power of the following value; indicates exponentiation.
           Three squared or three to the second power is nine.
           Three to the power of two is nine.
           Three to the second is nine.
     11. prep. Used to indicate the indirect object.
           I gave the book to him.
     12. prep. (time) Preceding.
           ten to ten = 9:50; We're going to leave at ten to (the hour).
     13. prep. Used to describe what something consists of or contains.
           Anyone could do this job; there's nothing to it.
           There's a lot of sense to what he says.
     14. prep. (Canada, UK, Newfoundland, West Midlands) At.
           Stay where you're to and I'll come find you, b'y.
     15. adv. Toward a closed, touching or engaging position.
           Please push the door to.
     16. adv. (nautical) Into the wind.
     17. adv. misspelling of too
be
     1. v. (intransitive, now literary) To exist; to have real existence.
     2. v. (with there, or dialectally it, as dummy subject) To exist.
           There is just one woman in town who can help us. (or, dialectally:) It is just one woman in town who can help us.
     3. v. (intransitive) To occupy a place.
           The cup is on the table.
     4. v. (intransitive) To occur, to take place.
           When will the meeting be?
     5. v. (intransitive, in perfect tenses, without predicate) Elliptical form of "be here", "go to and return from" or similar.
           The postman has been today, but my tickets have still not yet come.
           I have been to Spain many times.
           Moscow, huh? I've never been, but it sounds fascinating.
     6. v. (transitive, copulative) Used to indicate that the subject and object are the same.
           Knowledge is bliss.
           Hi, I’m Jim.
     7. v. (transitive, copulative, mathematics) Used to indicate that the values on either side of an equation are the same.
           3 times 5 is fifteen.
     8. v. (transitive, copulative) Used to indicate that the subject plays the role of the predicate nominal.
           François Mitterrand was president of France from 1981 to 1995.
     9. v. (transitive, copulative) Used to connect a noun to an adjective that describes it.
           The sky is blue.
     10. v. (transitive, copulative) Used to indicate that the subject has the qualities described by a noun or noun phrase.
           The sky is a deep blue today.
     11. v. (transitive, auxiliary) Used to form the passive voice.
           The dog was drowned by the boy.
     12. v. (transitive, auxiliary) Used to form the continuous forms of various tenses.
           The woman is walking.
           I shall be writing to you soon.
           We liked to chat while we were eating.
     13. v. (archaic, auxiliary) Used to form the perfect aspect with certain intransitive verbs, most of which indicate motion. Often still used for "to go".
     14. v. (transitive, auxiliary) Used to form future tenses, especially the future periphrastic.
           I am to leave tomorrow.
           I would drive you, were I to obtain a car.
     15. v. (transitive, copulative) Used to link a subject to a measurement.
           This building is three hundred years old.
           I am 75 kilograms.
           He’s about 6 feet tall.
     16. v. (transitive, copulative, with a cardinal numeral) Used to state the age of a subject in years.
           I’m 20. (= I am 20 years old.)
     17. v. (with a dummy subject) it Used to indicate the time of day.
           It is almost eight. (= It is almost eight o’clock.)
           It’s 8:30 read eight-thirty in Tokyo.
           What time is it there? It’s night.
     18. v. (With since) Used to indicate passage of time since the occurrence of an event.
           It has been three years since my grandmother died. (similar to My grandmother died three years ago, but emphasizes the intervening period)
           It had been six days since his departure, when I received a letter from him.
     19. v. (often, impersonal, with it as a dummy subject) Used to indicate weather, air quality, or the like.
           It is hot in Arizona, but it is not usually humid.
           Why is it so dark in here?
     20. v. (dynamic/lexical "be", especially in progressive tenses, conjugated non-suppletively in the present tense, see usage notes) To exist or behave in a certain way.
           "What do we do?" "We be ourselves.".
           Why is he being nice to me?
detected
     1. adj. Having been noticed.
           The detected submarine was tracked by sonar, it was easy once they knew where to look.
     2. v. simple past tense and past participle of detect
           We detected the submarine long before it observed us.
     detect
          1. v. to discover or find by careful search, examination, or probing
          2. adj. (obsolete) Detected.
by
     1. prep. Near or next to.
           The mailbox is by the bus stop.
     2. prep. At some time before (the given time), or before the end of a given time interval.
           Be back by ten o'clock!  We will send it by the first week of July.
     3. prep. Indicates the actor in a clause with its verb in the passive voice: Through the action or presence of.
           The matter was decided by the chairman.  The boat was swamped by the water.  He was protected by his body armour.
     4. prep. Indicates the creator of a work: Existing through the authorship etc. of.
           There are many well-known plays by William Shakespeare
     5. prep. Indicates the cause of a condition or event: Through the action of, caused by, responsibility for; by dint of.
     6. prep. Indicates a means: Involving/using the means of.
           I avoided the guards by moving only when they weren't looking.
     7. prep. Indicates a source of light used as illumination.
           The electricity was cut off, so we had to read by candlelight.
     8. prep. Indicates an authority, rule, or permission followed.
           I sorted the items by category.  By the power vested in me, I now pronounce you man and wife.
     9. prep. Indicates the amount of some progression: With a change of.
           Our stock is up by ten percent.
     10. prep. In the formulae X by X and by Xs, indicates a steady progression, one X after another.
           We went through the book page by page.  We crawled forward by inches.
     11. prep. Indicates a referenced source: According to.
           He cheated by his own admission.
     12. prep. Indicates an oath: With the authority of.
           By Jove! I think she's got it!  By all that is holy, I'll put an end to this.
     13. prep. Used to separate dimensions when describing the size of something.
           It is easy to invert a 2-by-2 matrix.  The room was about 4 foot by 6 foot.  The bricks used to build the wall measured 10 by 20 by 30 cm.
     14. prep. (horse breeding) Designates a horse's male parent (sire); cf. out of.
           She's a lovely little filly, by Big Lad, out of Damsel in Distress.
     15. adv. Along a path which runs by the speaker.
           I watched as it passed by.
     16. adv. In the vicinity, near.
           There was a shepherd close by.
           The shop is hard by the High Street.
     17. adv. To or at a place, as a residence or place of business.
           I'll stop by on my way home from work.
           We're right near the lifeguard station. Come by before you leave.
     18. adv. Aside, away.
           The women spent much time after harvest putting jams by for winter and spring.
     19. adj. Out of the way, subsidiary.
     20. n. (card games) A pass
     21. interj. alternative spelling of bye
the
     1. art. Definite grammatical article that implies necessarily that an entity it articulates is presupposed; something already mentioned, or completely specified later in that same sentence, or assumed already
           I’m reading the book. (Compare I’m reading a book.)
           The street in front of your house. (Compare A street in Paris.)
           The men and women watched the man give the birdseed to the bird.
     2. art.          Used before a noun modified by a restrictive relative clause, indicating that the noun refers to a single referent defined by the relative clause.
                    The street that runs through my hometown.
     3. art. Used before an object considered to be unique, or of which there is only one at a time.
           No one knows how many galaxies there are in the universe.
           God save the Queen!
     4. art. Used before a superlative or an ordinal number modifying a noun, to indicate that the noun refers to a single item.
           That was the best apple pie ever.
     5. art.          Added to a superlative or an ordinal number to make it into a substantive.
                    That apple pie was the best.
     6. art. Introducing a singular term to be taken generically: preceding a name of something standing for a whole class.
     7. art. Used before an adjective, indicating all things (especially persons) described by that adjective.
           Feed the hungry, clothe the naked, comfort the afflicted, and afflict the comfortable.
     8. art. Used to indicate a certain example of (a noun) which is usually of most concern or most common or familiar.
           No one in the whole country had seen it before.
           I don't think I'll get to it until the morning.
     9. art. Used before a body part (especially of someone previously mentioned), as an alternative to a possessive pronoun.
           A stone hit him on the head. (= “A stone hit him on his head.”)
     10. art. When stressed, indicates that it describes an object which is considered to be best or exclusively worthy of attention.
           That is the hospital to go to for heart surgery.
     11. adv. 1=With a comparative ormore and a verb phrase, establishes a parallel with one or more other such comparatives.
           The hotter the better.
           The more I think about it, the weaker it looks.
           The more money donated, the more books purchased, and the more happy children.
           It looks weaker and weaker, the more I think about it.
     12. adv. 1=With a comparative, and often withfor it, indicates a result more like said comparative. This can be negated withnone.
           It was a difficult time, but I’m the wiser for it.
           It was a difficult time, and I’m none the wiser for it.
           I'm much the wiser for having had a difficult time like that.
sensor
     1. n. A device or organ that detects certain external stimuli and responds in a distinctive manner.
Dictionary entries from Wiktionary