Etymology
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Nembutal

type of barbiturate, originally used to calm patients before anesthesia and operation, 1930, proprietary name of pentobarbitone sodium, formed from letters and syllables from N(a) "sodium" + full chemical name 5-ethyl-5-1-methylbutyl barbiturate.

updated on May 19, 2019

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Definitions of Nembutal from WordNet

Nembutal (n.)
a barbiturate (trade name Nembutal) used as a sedative and hypnotic and antispasmodic;
Synonyms: pentobarbital sodium / pentobarbital / yellow jacket
Etymologies are not definitions. From wordnet.princeton.edu, not affiliated with etymonline.