WATT-HOUR Meaning of WATT-HOUR in English watt-hour BrE AmE ˌwɒt ˈa ʊ ‿ə AmE \ ˌwɑːt̬ ˈaʊ‿ ə r▷ watt-hour|s z Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012