n.
Pronunciation: ˌ el-( ˌ )es- ' d ē
Function: noun
Etymology: German L yserg s äure- D iäthylamid lysergic acid diethylamide
Date: 1950
: a semisynthetic illicit organic compound C 20 H 25 N 3 O derived from ergot that induces extreme sensory distortions, altered perceptions of reality, and intense emotional states, that may also produce delusions or paranoia, and that may sometimes cause panic reactions in response to the effects experienced ― called also lysergic acid diethylamide