The Collaborative International Dictionary
Acid amide
Amide \Am"ide\ (?; 277), n. [Ammonia + -ide.] (Chem.) A compound formed by the union of amidogen with an acid element or radical. It may also be regarded as ammonia in which one or more hydrogen atoms have been replaced by an acid atom or radical.
Acid amide, a neutral compound formed by the substitution of the amido group for hydroxyl in an acid.
Usage examples of "acid amide".
Well, it would have been something like that because ergot contains lysergic acid amide, which is the prime ingredient of LSD.