: the side of a celestial body (such as the earth, the moon, or a planet) not in daylight
Examples of nightside in a Sentence
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The feature can be found around 25 degrees south of the lunar equator close to the terminator, which is the line separating the dayside and nightside of the moon, close to the prominent Werner and Aliacensis Craters.
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Anthony Wood, Space.com, 1 July 2025
The Resilience Lander will set down in the area below Timaeus, to the left of Archytas, fairly close to the line dividing the dayside and nightside of the lunar surface, known as the terminator.
—Anthony Wood, Space.com, 4 June 2025
However, in some cases, lightning strikes happened mostly on the nightside, just past the day-night terminator line.
—Paul Sutter, Space.com, 20 May 2025
Its star-facing dayside is scorching, while its nightside is much cooler.
—Jamie Carter, Forbes, 19 Feb. 2025
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Anthony Wood, Space.com, 1 July 2025
The Resilience Lander will set down in the area below Timaeus, to the left of Archytas, fairly close to the line dividing the dayside and nightside of the lunar surface, known as the terminator.
—Anthony Wood, Space.com, 4 June 2025
However, in some cases, lightning strikes happened mostly on the nightside, just past the day-night terminator line.
—Paul Sutter, Space.com, 20 May 2025
Its star-facing dayside is scorching, while its nightside is much cooler.
—Jamie Carter, Forbes, 19 Feb. 2025
See All Example Sentences for nightside
Cite this Entry
“Nightside.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/nightside. Accessed 18 Jul. 2025.
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