-ition

1. a compound suffix of nouns, being -tion with a preceding original or formative vowel, or, in other words, a combination of -ite ² and -ion:

   expedition; extradition.

Word History and Origins

Origin of -ition¹

< Latin -itiōn- or -ītiōn-, stem of -itiō or -ītiō. See -ite ², -ion

Example Sentences

“Weighting my personal intu­ition more heavily did not cross my mind,” he said.

From Slate

In add­ition to the $50,000 prize, the winner will get a year of mentoring.

From Scientific American

And would woman--that be- ing of such short sight, whose mind is always so taken up with whatever instances lie near- est to her--be capable of framing anything that could pass muster as a great generalisa- ition?

From Project Gutenberg