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  1. living or occurring during the same period of time; contemporary.
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Origin of contemporaneous

1650–60; < Latin contemporāneus, equivalent to con- con- + tempor- (stem of tempus time) + -āneus (-ān(us) -an + -eus -eous)
Related formscon·tem·po·ra·ne·i·ty [kuhn-tem-per-uh-nee-i-tee] /kənˌtɛm pər əˈni ɪ ti/, con·tem·po·ra·ne·ous·ness, nouncon·tem·po·ra·ne·ous·ly, adverbnon·con·tem·po·ra·ne·ous, adjectivenon·con·tem·po·ra·ne·ous·ly, adverbnon·con·tem·po·ra·ne·ous·ness, nounpre·con·tem·po·ra·ne·i·ty, nounpre·con·tem·po·ra·ne·ous, adjectivepre·con·tem·po·ra·ne·ous·ly, adverbun·con·tem·po·ra·ne·ous, adjectiveun·con·tem·po·ra·ne·ous·ly, adverbun·con·tem·po·ra·ne·ous·ness, noun
Can be confusedcontemporary contemporaneous (see synonym study at contemporary)

Synonyms for contemporaneous

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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words for contemporaneous

coetaneous, coeval, concomitant, simultaneous, synchronic, synchronous, coexisting

Examples from the Web for contemporaneous

Contemporary Examples of contemporaneous

Historical Examples of contemporaneous

British Dictionary definitions for contemporaneous


  1. existing, beginning, or occurring in the same period of time
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Derived Formscontemporaneity (kənˌtɛmpərəˈniːɪtɪ) or contemporaneousness, nouncontemporaneously, adverb
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

Word Origin and History for contemporaneous


1650s, from Late Latin contemporaneus "contemporary," from the same source as contemporary but with a form after Late Latin temporaneous "timely." Related: Contemporaneously; contemporaneity.

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Online Etymology Dictionary, © 2010 Douglas Harper