THEORETICIAN Meaning of THEORETICIAN in English theoretician BrE AmE ˌθɪər ə ˈtɪʃ ə n -e-, -ɪ- AmE \ ˌθiː ə r ə ˈtɪʃ ə n ˌθɪr əˈ•• ▷ theoretician|s z Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012