in situ in·situ uncommon adverb (1) adjective (1) adverb 1. in the original or natural place or site “carcinoma in situ” “the archeologists left the pottery in place” Synonymsin situin place adjective 1. being in the original position; not having been moved “the archeologists could date the vase because it was in situ” “an in-situ investigator” Synonymsunmoved Similarunaltered WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.
