Definition of clonazepam in US English:

clonazepam

noun

Pharmacology
  • A benzodiazepine with potent anticonvulsant used especially in the treatment of epilepsy and other seizure disorders. [Clonazepam is a derivative of nitrazepam. Chemical formula: C15H10ClN3O3. A trademark for this drug is Klonopin.]

Origin

1970s; earliest use found in Pharmacologist. Probably from clo- (representing chloro-) + n- (in nitro-), elements in the chemical name + -azepam.