[医] 羟[基]

Hydroxy- \Hy*drox"y-\ (Chem.)
A combining form, also used adjectively, indicating hydroxyl
as an ingredient.

{Hydroxy acid} (Chem.), an organic acid, having (besides the
hydroxyl group of the carboxyl radical) an alcoholic
hydroxyl group, and thus having the qualities of an
alcohol in addition to its acid properties; as, lactic and
tartaric acids are hydroxy acids.