flur·az·e·pam \flu̇rˈazəˌpam\noun (-s) Etymology:fluor- + -azepam (as in diazepam — herein) : a benzodiazepine C21H23ClFN3O closely related structurally to diazepam that is used in the form of its hydrochloride as a sleep-inducing agent to treat insomnia — see dalmane herein