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-ition

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  1. a compound suffix of nouns, being -tion with a preceding original or formative vowel, or, in other words, a combination of -ite2 and -ion: expedition; extradition.

Origin of -ition

< Latin -itiōn- or -ītiōn-, stem of -itiō or -ītiō. See -ite2, -ion
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
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