-ion

- 4 dictionary results

-ion

a suffix, appearing in words of Latin origin, denoting action or condition, used in Latin and in English to form nouns from stems of Latin adjectives (communion; union), verbs (legion; opinion), and esp. past participles (allusion; creation; fusion; notion; torsion).

Also, -ation, -ition, -tion.

Compare -cion, -xion.

Origin:
< L -iōn- (s. of -iō) suffix forming nouns, esp. on ptp. stems; r. ME -ioun < AF < L -iōn-

-tion

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).

Also, -ation, -cion, -ion, -sion, -xion.

Origin:
< L -tiōn- (s. of -tiō), equiv. to -t(us) ptp. suffix + -iōn- -ion

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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Link To -ion

-ion
suff.

1. Action or process: completion.
2. Result of an action or process: indention.
State or condition: dehydration.

[Middle English, from Old French, from Latin -iō, -iōn-, n. suff.]

The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Word Origin & History

-tion

suffix forming nouns from verbs, from L. -tionem, accusative of noun suffix -tio (gen. -tionis) forming nouns of condition and action (the -t- is the Latin pp. stem).

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