terminator
noun
ter·mi·na·tor
ˈtər-mə-ˌnā-tər 
1
: the dividing line between the illuminated and the unilluminated part of the moon's or a planet's disk
2
: one that terminates
Examples of terminator in a Sentence
Recent Examples on the Web
Capella Space’s satellite was going to fall back to Earth early; in a 2024 conference paper about the company’s experience, an author then at Capella Space’s team stated that its members found the terminator forecast to be accurate and began to use it in their modeling.
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Sarah Scoles, Scientific American, 10 Dec. 2025
However, the weeks surrounding them can provide spectacular views of their own, as the line separating night from day, known as the terminator, sweeps across its surface, throwing ancient craters, ravines and mountain ranges into relief.
—Anthony Wood, Space.com, 9 Dec. 2025
On Mercury, the dividing line between day and night, the terminator, is more than just a twilight zone.
—Kaif Shaikh, Interesting Engineering, 13 Nov. 2025
Rachel LaMont was an absolute puzzle terminator on Survivor 47, dominating the brain-teasers during the pre-merge stage of the game, and then winning the final hanging bat puzzle immunity contest on her way to becoming the Sole Survivor.
—Dalton Ross, Entertainment Weekly, 7 Oct. 2025
See All Example Sentences for terminator
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Sarah Scoles, Scientific American, 10 Dec. 2025
However, the weeks surrounding them can provide spectacular views of their own, as the line separating night from day, known as the terminator, sweeps across its surface, throwing ancient craters, ravines and mountain ranges into relief.
—Anthony Wood, Space.com, 9 Dec. 2025
On Mercury, the dividing line between day and night, the terminator, is more than just a twilight zone.
—Kaif Shaikh, Interesting Engineering, 13 Nov. 2025
Rachel LaMont was an absolute puzzle terminator on Survivor 47, dominating the brain-teasers during the pre-merge stage of the game, and then winning the final hanging bat puzzle immunity contest on her way to becoming the Sole Survivor.
—Dalton Ross, Entertainment Weekly, 7 Oct. 2025
See All Example Sentences for terminator
Cite this Entry
“Terminator.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/terminator. Accessed 21 Dec. 2025.
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