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Meaning of butabarbital sodium

bu•ta•bar'bi•tal so'dium

Pronunciation: (by"tu-bär'bi-tôl", -tal"), [key]
— Pharm. Pharm.
  1. a barbiturate, CHNNaO, used as a sedative and hypnotic. Also called
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.