in situ

adverb or adjective

in si·​tu (ˌ)in-ˈsī-(ˌ)tü 

-ˈsi-,

-(ˌ)tyü 

 also  -ˈsē-,

-(ˌ)chü 

: in the natural or original position or place

an in situ cancer confined to the breast duct

Examples of in situ in a Sentence

Recent Examples on the Web

But only pieces likely to interest visitors are likely to remain in situ. —Antonia Mortensen, CNN Money, 23 July 2025

While Liverpool have moved swiftly to add to their squad, there are a number of players already in situ whose futures are unclear. —Andy Jones, New York Times, 11 June 2025

Miguel Molina, like Cuesta a young coach, 32, who is closer in age to the players and can bring a different kind of connection, remain in situ. —Amy Lawrence, New York Times, 19 June 2025

In recent years, many researchers have been focused on DCIS: ductal carcinoma in situ, the earliest stage of cancer that in most cases remains in the milk ducts and does not invade other tissues. —Alice Park, TIME, 12 Dec. 2024

Word History

Etymology

Latin, in position

First Known Use

1740, in the meaning defined above

Rhymes for in situ

• amadou
• avenue
• ballyhoo
• baraboo
• barbecue
• barbeque
• bugaboo
• cabildo
• caribou
• cockatoo
• detinue
• devalue

Kids Definition

in situ

adverb or adjective

in si·​tu (ˈ)in-ˈsī-t(y)ü 

-ˈsi-

: in the natural or original position

the cancer cells remained in situ

Etymology

Latin, "in position"

Medical Definition

in situ

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