o
英[əʊ]
美[o]
- int. 哦，啊（表示惊讶、痛苦、恐惧、赞叹等）
- n. 零；英语字母中的第十五个字母
- symb. 氧（oxygen）
英英释意
- 1. the blood group whose red cells carry neither the A nor B antigens;
- "people with type O blood are universal donors"
- 2. a nonmetallic bivalent element that is normally a colorless odorless tasteless nonflammable diatomic gas; constitutes 21 percent of the atmosphere by volume; the most abundant element in the earth's crust
- 3. the 15th letter of the Roman alphabet