Etymology
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benzodiazepine (n.)

1934, from benzo-, word-forming element used in chemistry to indicate presence of a benzene ring fused with another ring, + di + azo- + epine, a suffix denoting a seven-membered ring, from Greek hepta (see seven).

updated on May 20, 2017

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Definitions of benzodiazepine from WordNet

benzodiazepine (n.)
any of several similar lipophilic amines used as tranquilizers or sedatives or hypnotics or muscle relaxants; chronic use can lead to dependency;
From wordnet.princeton.edu, not affiliated with etymonline.