noun.
An organic compound (CH3CHO). Sometimes called ethanal or acetic aldehyde. See aldehyde.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
noun.
a colorless volatile water-soluble liquid aldehyde used chiefly in the manufacture of acetic acid and perfumes and drugs
Word Usage
"It is a dangerous combination because the mixing of these two entities causes the conversion of alcohol to acetaldehyde, which is poisonous and can land the patient in the hospital."