terminationchecker

noun
UK /ˌtɜːmɪˈneɪʃənˌtʃɛkə/
US /ˌtɜːrməˈneɪʃənˌtʃɛkər/

A tool that checks if something has ended.

The terminationchecker told us the game was over.


OTHER MEANINGS

2. A program that decides when a computer process should stop.

The terminationchecker shut down the frozen app.

3. A person who makes sure a task is truly finished.

The terminationchecker signed off on the final report.

4. A device that senses when a machine has stopped running.

The terminationchecker beeped when the motor halted.