Hypertext Webster Gateway: "aldehyde"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Aldehyde \Al"de*hyde\, n. [Abbrev. fr. alcohol dehydrogenatum,
alcohol deprived of its hydrogen.] (Chem.)
A colorless, mobile, and very volatile liquid obtained from
alcohol by certain processes of oxidation.
Note: The aldehydes are intermediate between the alcohols and
acids, and differ from the alcohols in having two less
hydrogen atoms in the molecule, as common aldehyde
(called also {acetic aldehyde} or {ethyl aldehyde}),
{C2H4O}; methyl aldehyde, {CH2O}.
From WordNet (r) 1.7 (wn)
aldehyde
n : any of a class of highly reactive chemical compounds; used
in making resins and dyes and organic acids
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