Main Entry: al·de·hyde

Pronunciation: \ˈal-də-ˌhīd\

Function: noun

Etymology: German Aldehyd, from New Latin al. dehyd., abbreviation of alcohol dehydrogenatum dehydrogenated alcohol

Date: circa 1846

: acetaldehyde; broadly : any of a class of highly reactive organic compounds that are analogous to acetaldehyde and characterized by a carbonyl group attached to a hydrogen atom

— al·de·hy·dic \ˌal-də-ˈhī-dik\ adjective