WordReference Random House Unabridged Dictionary of American English © 2025
-ition,
- 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.
- Latin -itiōn- or -ītiōn-, stem of -itiō or -ītiō. See -ite2, -ion
'-ition' also found in these entries (note: many are not synonyms or translations):
-itious
- expeditious
- fortition
- imbibition
- inanition
- ion
- nutraceutical
- recognize
- sedition
- transposon
- volition