ALDERMASTON Meaning of ALDERMASTON in English Aldermaston BrE AmE ˈɔːld ə ˌmɑːst ə n ˈɒld-, § -ˌmæst- AmE - ə r ˌmæst- ˈɑːld- Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012