a functional category of newer antipsychotic drugs thought to exert their action predominantly through serotonergic blockade; now frequently called second-generation antipsychotics.
a·typ·i·cal an·ti·psy·chot·ic a·gent
(ā-tip'i-kăl an'tē-sī-kot'ik ā'jĕnt) A functional category of newer antipsychotic drugs (e.g., olanzapine, clozapine) thought to exert their action predominantly through serotonergic blockade.