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-tion

American  
  1. 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 ).


-tion British  

suffix

  1. indicating state, condition, action, process, or result Compare -ation -ion

    election

    prohibition

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of -tion

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

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

If the word has a recognizable prefix or a familiar ending, such as -ing or -tion, the memory tells the computer in millionths of a second how to hyphenate correctly.

From Time Magazine Archive

For instance, in English it’s not obvious how to draw a picture of the common syllable -tion, but we could instead draw a picture illustrating the verb shun, which has the same pronunciation.

From "Guns, Germs, and Steel: The Fates of Human Societies" by Jared M. Diamond

Usually, however, English -tion corresponds to Esperanto -o, -ado, or -aĵo, as:—information = inform-o, -ado, -aĵo; and such forms are often used even when an alternative form in -cio exists, thus: deklar-o, -aĵo.

From The International Auxiliary Language Esperanto Grammar and Commentary by Cox, George

What should be done with the terminations -able, -ible, -tion, -cial, -tive, -ive, and -sion?

From Division of Words Rules for the Division of Words at the Ends of Lines, with Remarks on Spelling, Syllabication and Pronunciation by Hamilton, Frederick W. (Frederick William)