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Meaning of in situ

in si•tu

Pronunciation: (in sī't, -ty, sē'-Latin.in sit'), [key]
  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. carcinoma in situ.
    1. in place or position; undisturbed.
    2. in a localized state or condition:carcinoma in situ.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.