Phenothiazine

noun

1. A yellow organic compound, C12H9NS, used in insecticides, livestock anthelmintics, and dyes.
2. Any of a group of drugs derived from this compound and used in the treatment of psychiatric disorders, such as schizophrenia.
3. A polycyclic heterocycle consisting of two benzene rings fused to one of thiazine; thiodiphenylamine, dibenzothiazine
4. Any of a family of pharmaceuticals, derived from this compound, used to treat schizophrenia etc.
5. a compound used primarily in veterinary medicine to rid farm animals of internal parasites