-ian stress-imposing BrE AmE i‿ən —This suffix sometimes causes a change in the stressed vowel: ₍ˌ₎ Peck ˈ sniffian ₍ˌ₎ Chau ˈ cerian -ˈsɪər i‿ən AmE \ -ˈsɪr i‿ən
-IAN
Meaning of -IAN in English
Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012