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-on

Definition of -on in English:

suffix

Physics , Biochemistry , & Chemistry
Forming nouns:
2Denoting molecular units: codon
3Denoting substances: interferon

Origin

sense 1 originally in electron, from ion, influenced (as in sense 2) by Greek on 'being'; sense 3 is on the pattern of words such as cotton or from German -on.

Definition of -on in:

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Word of the day prepotent
Pronunciation: ˌprēˈpōtnt
adjective
greater than others in power or influence