酸素 は英語でoxygen 英語の定義 酸素 1. n. oxygen (chemical element) 2. n. oxygen (molecular oxygen) その他の翻訳と定義 oxygen 1. 名詞. 酸素 oxygen 1. n. A chemical element (symbol O) with an atomic number of 8 and relative atomic mass of 15.9994. 2. n. Molecular oxygen (O2), a colorless, odorless gas at room temperature. 3. n. (medicine) A mixture of oxygen and other gases, administered to a patient to help him or her to breathe. 4. n. An atom of this element. ウィクショナリーから辞書引用辞書