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amide (plural amides)
- (organic chemistry) Any derivative of an oxoacid in which the hydroxyl group has been replaced with an amino or substituted amino group; especially such derivatives of a carboxylic acid, the carboxamides.
- (inorganic chemistry) Any ionic derivative of ammonia in which a hydrogen atom has been replaced with a metal cation.
See also 
organic chemistry: derivative of an oxoacid
ionic derivative of ammonia