Definitions for: Hydroxyl

[n] the monovalent group -OH in such compounds as bases and some acids and alcohols

Webster (1913) Definition: Hy*drox"yl, n. [Hydro-, 2 + oxygen + -yl.] (Chem.)
A compound radical, or unsaturated group, HO, consisting of
one atom of hydrogen and one of oxygen. It is a
characteristic part of the hydrates, the alcohols, the oxygen
acids, etc.

Synonyms: hydroxyl group, hydroxyl radical

See Also: chemical group, group, radical