NONAGON Meaning of NONAGON in English nonagon BrE AmE ˈnɒn əɡ ə n ˈnəʊn-, -ə ɡɒn AmE \ ˈnɑːn ə ɡɑːn ˈnoʊn- ▷ nonagon|s z Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012