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phenobarbital

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noun phe·no·bar·bi·tal \ˌfē-nō-ˈbär-bə-ˌtȯl\

Definition of phenobarbital

  1. :  a crystalline barbiturate C12H12N2O3 used as a hypnotic, sedative, and anticonvulsant

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First Known Use of phenobarbital

1919

Medical Dictionary

phenobarbital

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noun phe·no·bar·bi·tal \ˌfē-nō-ˈbär-bə-ˌtȯl, -tȧl\

Medical Definition of phenobarbital

  1. :  a crystalline barbiturate C12H12N2O3 that is used orally or is administered by injection in the form of its sodium salt C12H11N2NaO3 as a hypnotic and sedative—see luminal

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phenobarbital

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