SYNERGISTIC Meaning of SYNERGISTIC in English synergistic BrE AmE ˌsɪn ə ˈdʒɪst ɪk ◂ -ɜː- AmE \ - ə r-▷ synergistic|ally ə l‿i Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012