Medical Dictionary

in situ

adv or adj in si·tu
\(ˈ)in-ˈsī-(ˌ)t(y)ü, -ˈsi- also -ˈsē-, -(ˌ)chü\

Medical Definition of IN SITU

:  in the natural or original position or place <an in situ cancer confined to the breast duct>—see carcinoma in situ
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