1. 羟基：hydroxy ion 羟离子 | hydroxyl group 羟基 | hydrozincite 水锌矿
2. 羟族：hydrostatic pressure 静压 | hydroxyl group 羟族 | hydroxyl ion 羟基离子
3. 羟基,氢氧基：hydrotropism 向水性 | hydroxyl group 羟基,氢氧基 | hygrometer 湿度计
4. 水酸基：水位计 water level gauge | 水酸基 hydroxyl group | 水平器 level
noun
1. the monovalent group -OH in such compounds as bases and some acids and alcohols
Synonym: hydroxyl hydroxyl radical