noun Etymology: penta- + -o- + barbital Date: 1931 a granular barbiturate C 11 H 18 N 2 O 3 used especially in the form of its sodium or calcium salt as a sedative, hypnotic, and antispasmodic
PENTOBARBITAL
Meaning of PENTOBARBITAL in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012