in situ

adverb or adjective in si·tu \(ˌ)in-ˈsī-(ˌ)tü, -ˈsi-, -(ˌ)tyü also -ˈsē-, -(ˌ)chü\

Definition of IN SITU

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

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Latin, in position

First Known Use: 1740

Medical Dictionary

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

: 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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