noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   A benzodiazepine C₁₇H₁₂Cl₂N₄ used as a sleep-inducing agent in the short-term treatment of insomnia. uncountable
2. 2
   a form of benzodiazepine (trade name Halcion) frequently prescribed as a sleeping pill; usually given to people who have trouble falling asleep wordnet

Synonyms

All synonyms

halcion

Etymology

Blend of triazolo + -azepam.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.