PENTOBARBITONE Meaning of PENTOBARBITONE in English pentobarbitone BrE AmE ˌpent ə ʊ ˈbɑːb ɪ təʊn -ˈ•ə- AmE \ ˌpen t̬ ə ˈbɑːrb ə toʊn Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012