AUTOCHTHON Meaning of AUTOCHTHON in English autochthon BrE AmE ɔː ˈtɒk θ ə n -θɒn AmE \ -ˈtɑːk- ɑː-, -θɑːn ▷ autochthon|s z Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012