SERIATIM Meaning of SERIATIM in English seriatim BrE AmE ˌsɪər i ˈeɪt ɪm ˌser-, -ˈɑːt-, § -əm AmE ˌsɪr ɪ ˈeɪt̬ əm -ˈæt̬- Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012