lysergic acid ly·ser·gic acid (lĭ-sûr'jĭk, lī-)
A crystalline alkaloid derived from ergot and used in medical research as a psychotomimetic agent.
|lysergic acid (lĭ-sûr'jĭk, lī-) Pronunciation Key
A crystalline alkaloid that is a major constituent of ergot. It is used in medical research to induce hallucinations, delusions, and other symptoms of psychosis. The drug LSD is a derivative of lysergic acid. Chemical formula: C16H16N2O2.