|ethələ|mēn noun
Etymology: International Scientific Vocabulary ethyl + amine
1. : a colorless flammable volatile liquid base C 2 H 5 NH 2 that has an ammoniacal odor, is usually made from ammonia and ether or alcohol, and is used chiefly in organic synthesis — called also monoethylamine
2. : an amine containing ethyl attached to amino nitrogen — see diethylamine , triethylamine