RADIOLARIAN Meaning of RADIOLARIAN in English radiolarian BrE AmE ˌreɪd i ə ʊ ˈleər i‿ən AmE \ -oʊ ˈler- -ˈlær- ▷ radiolarian|s z Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012