[ in -sahy-too, -tyoo, see-; Latin in -sit-oo ]
/ ɪn ˈsaɪ tu, -tyu, ˈsi-; Latin ɪn ˈsɪt u /
situated in the original, natural, or existing place or position: The archaeologists were able to date the vase because it was found in situ.
- in place or position; undisturbed.
- (especially of a malignant tumor) in a localized state or condition: carcinoma in situ.
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Origin of in situ
First recorded in 1730–40, in situ is from Latin in sitū literally, “in place”
Words nearby in situ
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021
British Dictionary definitions for in situ
/ Latin (ɪn ˈsɪtjuː) /
adverb, adjective (postpositive)
in the natural, original, or appropriate position
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
Medical definitions for in situ
[ ĭn sī′tōō ]
In the original position.
Confined to the site of origin.
Other words from in situin situ adv.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Cultural definitions for 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 New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.