/klawr prom"euh zeen', klohr-/ , n.
a grayish-white, crystalline powder, C 17 H 19 ClN 2 S, derived from phenothiazine, used chiefly to inhibit nausea and vomiting and as a major tranquilizer in the management of schizophrenia and related psychoses.
[ 1950-55; CHLOR- 2 + PRO(PYL) + (A)M(INE) + AZINE ]