pentobarbitone

pen to bar bi tone |ˌpentəˈbärbiˌtōn ˌpɛntəˈbɑrbətoʊn | ▶noun British term for pentobarbital.

pentobarbitone

pentobarbitone |ˌpɛntə (ʊ )ˈbɑːbɪtəʊn |(US pentobarbital ) ▶noun [ mass noun ] Medicine a narcotic and sedative barbiturate drug formerly used to relieve insomnia. ●Alternative name: 5-ethyl-5 -(1-methylbutyl )-barbituric acid; often used as the sodium salt (sodium pentobarbitone, Nembutal ). ORIGIN 1930s: from pentane + barbitone (or barbital ).