a yellowish, crystalline substance, CHNS, used as an insecticide, in the treatment of worm infections in livestock, and in the synthesis of tranquilizers
Origin:
pheno- + thiazine
See phenothiazine in American Heritage Dictionary 4
noun
A yellow organic compound, C12H9NS, used in insecticides, livestock anthelmintics, and dyes.
Any of a group of drugs derived from this compound and used in the treatment of psychiatric disorders, such as schizophrenia.