noun🔗ShareAn organic compound, 6-methyl-9,10-didehydro-ergoline-8-carboxylic acid, derived from an alkaloid found in ergot; its amide derivatives are widely used as pharmaceuticals and as hallucinogenic drugs (LSD)."Because lysergic acid is a precursor to LSD, its possession is carefully regulated in many countries. "compoundsubstancechemistrymedicinebiochemistryChat with AIVocabulary GamePractice Reading