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Meaning of phenobarbital

phe•no•bar•bi•tal

Pronunciation: (fē"nō-bär'bi-tôl", -tal", -nu-), [key]
— n. Pharm.
  1. a white, crystalline powder, CHNO, used as a sedative, a hypnotic, and as an antispasmodic in epilepsy.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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