/an'tee suy kot"ik, an'tuy-/ , Pharm.
adj.
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.
n.
2. Also called major tranquilizer, neuroleptic . any such substance, as the phenothiazines.
[ 1950-55; ANTI- + PSYCHOTIC ]