HYDROXIDE
hydroxide
(noun) a chemical compound containing the hydroxyl group
hydroxide, hydrated oxide
(noun) a compound of an oxide with water
Source: WordNet® 3.1
Etymology
Noun
hydroxide (plural hydroxides)
(chemistry) An univalent anion (OH-) based on the hydroxyl functional group.
Any substance containing such an anion.
Source: Wiktionary
Hy*drox"ide, n. Etym: [Hydro-, 2 + oxide.] (Chem.)
Definition: A hydrate; a substance containing hydrogen and oxygen, made by
combining water with an oxide, and yielding water by elimination. The
hydroxides are regarded as compounds of hydroxyl, united usually with
basic element or radical; as, calcium hydroxide ethyl hydroxide.
Source: Webster’s Unabridged Dictionary 1913 Edition