Where does “Ô-hai-ô” come from?

Ô-hai-ô (Vietnamese) comes from English Ohio, from Seneca ohiːyoʼ, from Seneca ohiːyoːh — good river.

Ancestry of “Ô-hai-ô”, step by step

StepLanguageWordMeaning
1EnglishOhio
2Senecaohiːyoʼ
3Senecaohiːyoːhgood river
Every word from Seneca ohiːyoːhEvery word from Seneca ohiːyoʼEvery word from English Ohio