nounEtymology: German Lysergsšure-Dišthylamid lysergic acid diethylamide Date: 1950 a semisynthetic illicit organic compound C20H25N3O 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 ó called also lysergic acid diethylamide
Highly potent hallucinogen. An organic compound, LSD can be derived from the alkaloids ergotamine and ergonovine, found in the ergot fungus, but most LSD is produced synthetically. It can block the action of the neurotransmitter serotonin and produces marked deviations from normal perceptions and behavior lasting 8-10 hours or longer. Mood shifts, time and space distortions, and impulsive behavior may progress to suspicions of the intentions and motives of other people and aggression against them. Flashbacks to LSD-induced hallucinations can occur years later. LSD is not an approved drug, and no clinically valuable uses have been found for it.