a suffix occurring in words of Latin origin, used to form abstract nouns from verbs or stems not identical with verbs, whether as expressing action (revolution; commendation), or a state (contrition; starvation), or associated meanings (relation; temptation).

Origin of -tion

< Latin -tiōn- (stem of -tiō), equivalent to -t(us) past participle suffix + -iōn- -ion

Words nearby -tion

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

British Dictionary definitions for -tion


suffix forming nouns

indicating state, condition, action, process, or resultelection; prohibition Compare -ation, -ion

Word Origin for -tion

from Old French, from Latin -tiō, -tiōn-
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