GASEOUS Meaning of GASEOUS in English gaseous BrE AmE ˈɡæs i‿əs ˈɡeɪs-, ˈɡeɪz- ˈɡæʃ əs ▷ gaseous|ness nəs nɪs Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012