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circa

[sur-kuh] /ˈsɜr kə/
preposition, adverb
1.
about: (used especially in) approximate dates:
The Venerable Bede was born circa 673.
Abbreviation: ca, ca., c., c, cir., circ.
Origin
1860-1865
1860-65; < Latin: around, about, akin to circus circus
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for circa

circa

/ˈsɜːkə/
preposition
1.
(used with a date) at the approximate time of: circa 1182 bc. Abbreviation c., ca.
Word Origin
Latin: about; related to Latin circus circle, circus
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
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Word Origin and History for circa
prep.

1856, from Latin circa "around, round about, near; in the region of; about the time of," alternative form of circum "round about" (see circum-).

Online Etymology Dictionary, © 2010 Douglas Harper
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circa in Medicine

circa (sûr'kə)
prep.
Abbr. ca
In approximately; about.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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9
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