PROPHYLACTIC Meaning of PROPHYLACTIC in English prophylactic BrE AmE ˌprɒf ə ˈlækt ɪk ◂ -ɪ- AmE \ ˌproʊf- ˌprɑːf- ▷ prophylactic|ally ə l‿i▷ prophylactic|s s Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012