A chemical compound formed when a carboxylic acid reacts with ammonia or an amine, with a characteristic C=O group bonded to nitrogen.
From 'ammonia' + '-ide' (chemical suffix), coined in the early 19th century as chemistry was developing systematic nomenclature for compound types.
Amides are everywhere—they're in your proteins (where amino acids are connected by peptide bonds, which are amide bonds), in nylon fabric, and in many pharmaceuticals, making them one of the most important functional groups in chemistry.
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