A nitrogenous compound related to or derived from ammonia. Reaction of an alkali metal with ammonia yields inorganic amides, e.g., sodium amide (NaNH2). Organic amides are characterized by an acyl group (CONH2) usually attached to an organic group (R═CONH2); formamide (HCONH2) and carbamide (urea) CO(NH2)2 are common examples.See Polyamide.