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-ion

Pronunciation: /(ə)n, ɪən, jən/

Definition of -ion in English:

suffix

1Forming nouns denoting the action of a verb or an instance of this: communion rebellion
1.1Denoting a resulting state or product: oblivion opinion

Origin

via French from Latin -ion-.

Usage

The suffix -ion is usually found preceded by s (-sion), t (-tion), or x (-xion).

Definition of -ion in:

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Pronunciation: ˈtenəbrəs
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dark; shadowy or obscure