1. (adj.)antipsychotic of or pertaining to any of various drugs used in the treatment of psychosis, esp. schizophrenia, and severe states of mania, depression, or paranoia.
Etymology: (1950–55)
Definition of 'antipsychotic'
Princeton's WordNet
1. (noun)major tranquilizer, major tranquillizer, major tranquilliser, antipsychotic drug, antipsychotic agent, antipsychotic, neuroleptic drug, neuroleptic agent, neuroleptic tranquilizer used to treatpsychoticconditions when a calmingeffect is desired