| Word | Definitions | Synonyms |
|---|---|---|
| carboxyl | (adjective) relating to or containing the carboxyl group or carboxyl radical | Synonyms: carboxylic |
| (noun) the univalent radical -COOH; present in and characteristic of organic acids | Synonyms: carboxyl group | |
| hydroxyl | (noun) the monovalent group -OH in such compounds as bases and some acids and alcohols | Synonyms: hydroxyl group, hydroxyl radical |