Definition of -ution in English:

-ution

Syllabification: -ution

suffix

(Forming nouns) equivalent to -ation (as in solution).

Origin

via French from Latin -utio(n-).

Definition of -ution in:

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Word of the day oleaginous
Pronunciation: ˌōlēˈajənəs
adjective
rich in, covered with, or producing oil; oily