SIAMESE Meaning of SIAMESE in English Siamese BrE AmE ˌsa ɪ‿ ə ˈmiːz ◂ -ˈmiːs ▶ ˌ Siamese ˈ cat BrE AmE▶ ˌ Siamese ˈ twin BrE AmE Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012