antipsychotic

adj.
Counteracting or diminishing the symptoms of psychotic disorders, such as schizophrenia, paranoia, and bipolar disorder.

antipsychotic an'ti·psy·chot'ic n.

n.pl

Medications used to decrease hallucinations, delusions, and other symptoms associated with schizophrenia and other psychotic disorders; enables functioning in daily life for individuals.

A drug, such as dopamine, which reduces aggression.

Effective in the management of manifestations of psychotic disorders; also, an agent that so acts. There are several classes of antipsychotic drugs (phenothiazines, thioxanthenes, dibenzazepines and butyrophenones), all of which may act by the same mechanism, i.e. blockade of dopaminergic receptors in the central nervous system. Called also neuroleptic and major tranquilizer.