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in situ

[in sahy-too, -tyoo, see-; Latin in sit-oo] /ɪn ˈsaɪ tu, -tyu, ˈsi-; Latin ɪn ˈsɪt u/
noun
1.
situated in the original, natural, or existing place or position:
The archaeologists were able to date the vase because it was found in situ.
2.
Medicine/Medical.
  1. in place or position; undisturbed.
  2. in a localized state or condition:
    carcinoma in situ.
Origin
1730-1740
1730-40; < Latin in sitū literally, in place
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for in-situ

in situ

/ɪn ˈsɪtjuː/
adverb, adjective (postpositive)
1.
in the natural, original, or appropriate position
2.
(pathol) (esp of a cancerous growth or tumour) not seen to be spreading from a localized position
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 in-situ

in situ

Latin, literally "in its (original) place or position" (see situate (v.)).

Online Etymology Dictionary, © 2010 Douglas Harper
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in-situ in Medicine

in situ in si·tu (ĭn sī'tōō)
adj.

  1. In the original position.

  2. Confined to the site of origin.


in situ adv.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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in-situ in Culture
in situ [(in seye-tooh, in sit-ooh)]

In the original place or arrangement: “The body was left in situ until the police arrived.” From Latin, meaning “in position.”

The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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