terminator

Meaning

Someone who terminates or ends something, especially (in later use) an assassin or exterminator.
A text character that serves to mark the end of a document or transmission.
The line between the day side and the night side of a moon, planet or other celestial body.
A DNA sequence which causes RNA transcription to cease and an mRNA transcript to break off.
An electrical device that absorbs reflection at the end of a transmission line.
An intelligent android created to destroy humans.

Partly from post-classical Latin terminator (5th century), from Latin terminō; partly from terminate + -or.
After the 1984 film The Terminator.

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