Definition of pentobarbitone in English:
 pentobarbitone
(US pentobarbital)
noun ˌpɛntə(ʊ)ˈbɑːbɪtəʊnˌpentəˈbärbiˌtäl
mass nounMedicine A narcotic and sedative barbiturate drug formerly used to relieve insomnia.
〔医〕戊巴比妥
Alternative name: 5-ethyl-5-(1-methylbutyl)-barbituric acid; often used as the sodium salt (sodium pentobarbitone, Nembutal)
Example sentencesExamples
-  One drug in particular, sodium pentobarbital - a barbiturate used to euthanize animals - is of prime concern.
 -  Barbiturates, such as mephobarbital and pentobarbital sodium, which are used to treat anxiety, tension, and sleep disorders.
 -  The sheep were given a general anaesthetic by intravenous pentobarbitone, intubation and ventilation.
 -  To induce a coma, an anesthesiologist typically infuses a patient with increasing doses of the barbiturate pentobarbital while monitoring her brain waves with electrodes.
 -  In this experiment, human volunteers consistently underestimated their performance impairment after acute administrations of triazolam, but not pentobarbital, a barbiturate.
 
Origin
1930s: from pentane + barbitone (or barbital).