| medium |
| 1. n. (plural media or mediums) The chemistry of the surrounding environment, e.g. solid, liquid, gas, vacuum, or a specific substance such as a solvent. | |
| 2. n. (plural media or mediums) The materials or empty space through which signals, waves or forces pass. | |
| 3. n. (plural media or mediums) A format for communicating or presenting information. | |
| 4. n. (plural media or mediums, engineering) The materials used to finish a workpiece using a mass finishing or abrasive blasting process. | |
| 5. n. (plural media or mediums, microbiology) A nutrient solution for the growth of cells in vitro. | |
| 6. n. (plural media or mediums) The means, channel, or agency by which an aim is achieved. | |
| 7. n. (plural mediums or media) A liquid base which carries pigment in paint. | |
| 8. n. (plural mediums or media, painting) A tool used for painting or drawing. | |
| Acrylics, oils, charcoal, and gouache are all mediums I used in my painting. | |
| 9. n. (plural mediums, spiritualism) Someone who supposedly conveys information from the spirit world. | |
| 10. n. (plural mediums) Anything having a measurement intermediate between extremes, such as a garment or container. | |
| 11. n. (plural mediums) A person whom garments or apparel of intermediate size fit. | |
| 12. n. (plural mediums, Ireland, dated, informal) A half-pint serving of Guinness (or other stout in some regions). | |
| 13. n. A middle place or degree. | |
| a happy medium | |
| 14. n. (dated) An average; sometimes the mathematical mean. | |
| 15. n. (logic) The mean or middle term of a syllogism, that by which the extremes are brought into connection. | |
| 16. adj. (obsolete) Arithmetically average. | |
| 17. adj. Of intermediate size, degree, amount etc. | |
| 18. adj. Of meat, cooked to a point greater than rare but less than well done; typically, so the meat is still red in the centre. | |
| 19. adv. to a medium extent | |
