ONTO Meaning of ONTO in English onto before a consonant BrE AmE ˈɒn tə AmE ˈɑːn tə ˈɔːn- , elsewhere ˈɒn tu -tuː AmE ˈɑːn tu ˈɔːn-, -tə Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012