noun
Loanword from English 'separation', used in various contexts such as technology, sports, and everyday situations to refer to the act of separating or the state of being separated.
この装置は油と水のセパレーションに使われる。
This device is used for the separation of oil and water.
チーム間のセパレーションが広がっている。
The separation between the teams is widening.