noun
backend; back end
In computing, the server-side part of a system, as opposed to the frontend (フロントエンド).
See also: フロントエンド
このアプリのバックエンドはPythonで書かれている。
The backend of this app is written in Python.
noun
Refers to the later stages of the nuclear fuel cycle, including spent fuel management and disposal.
核燃料サイクルのバックエンド対策が急務だ。
Measures for the back end of the nuclear fuel cycle are urgently needed.