Pharmacology| 1. | of or pertaining to any of various substances used in the treatment of psychosis, esp. schizophrenia, and acute or severe states of mania, depression, or paranoia. |
| 2. | Also called major tranquilizer, neuroleptic. any such substance, as the phenothiazines. |
| antipsychotic drug n. Any of a group of drugs, such as the phenothiazines or butyrophenones, that are used to treat psychosis. Also called major tranquilizer, neuroleptic. |
| major tranquilizer n. See antipsychotic drug. |
antipsychotic an·ti·psy·chot·ic (ān'tē-sī-kŏt'ĭk, ān'tī-)
adj.
Counteracting or diminishing the symptoms of a psychotic disorder such as schizophrenia, paranoia, or manic-depressive psychosis.