phenobarbital

[ fee-noh-bahr-bi-tawl, -tal, -nuh- ]
/ ˌfi noʊˈbɑr bɪˌtɔl, -ˌtæl, -nə- /

noun Pharmacology.

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

First recorded in 1915–20; pheno- + barbital

Example sentences from the Web for phenobarbital

British Dictionary definitions for phenobarbital

phenobarbital
/ (ˌfiːnəʊˈbɑːbɪtəl) /

noun

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

Medical definitions for phenobarbital

phenobarbital
[ fē′nō-bärbĭ-tôl′, -tăl′ ]

n.

A crystalline barbiturate used as a sedative, hypnotic, and anticonvulsant.

Scientific definitions for phenobarbital

phenobarbital
[ fē′nō-bärbĭ-tôl′, -tăl′ ]

A crystalline barbiturate used as a sedative and an anticonvulsant. Chemical formula: C12H12N2O3.