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Definition of onon
onon
/ˈoʊ.nɑːn/
O · non
onon Lexical Profile
CEFR
C2
Grade
10
Tier
3
Usage
Rare
Syllables
2
• noun
1
A major river in northeastern Mongolia and the Zabaykalsky Krai in Russia that merges with the Ingoda River to form the Shilka River, historically renowned as the birthplace of Genghis Khan.
• Rhymes for onon
• Nearby Words
Usage Trend
Historical frequency of usage in published text.
180019102020
Data source: Google Books Ngram Viewer
Cite this Entry
Wordmom. (2026). Definition of Onon. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/onon