[fee-noh-bahr-bi-tawl, -tal, -nuh-]
- a white, crystalline powder, C12H12N2O3, used as a sedative, a hypnotic, and as an antispasmodic in epilepsy.
Also especially British, phe·no·bar·bi·tone [fee-noh-bahr-bi-tohn, -nuh-] /ˌfi noʊˈbɑr bɪˌtoʊn, -nə-/.
Origin of phenobarbital
Also called phenylethylbarbituric acid.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- a white crystalline derivative of barbituric acid used as a sedative for treating insomnia and as an anticonvulsant in epilepsy. Formula: C 12 H 12 N 2 O 3
Word Origin and History for phenobarbitone
Online Etymology Dictionary, © 2010 Douglas Harper
- A crystalline barbiturate used as a sedative, hypnotic, and anticonvulsant.
- A crystalline barbiturate used as a sedative and an anticonvulsant. Chemical formula: C12H12N2O3.
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