night·​side ˈnīt-ˌsīd How to pronounce nightside (audio)
: the side of a celestial body (such as the earth, the moon, or a planet) not in daylight

Example Sentences

Recent Examples on the Web On the nightside, plasma from the sun instead deposits electrons, leaving the surface with a net negative charge. Alison Klesman, Discover Magazine, 22 Nov. 2019 However, since the nightside is too dark to observe, astronomers can only detect these water molecules right at the border between day and night. Jake Parks, Discover Magazine, 8 Aug. 2018 Amateur #radio & #GPS users expect signal disruptions on Earth's nightside. Joshua Hawkins, BGR, 18 July 2022 BepiColombo will fly by the planet's nightside, so images during the closest approach wouldn't be able to show much detail. Ashley Strickland, CNN, 1 Oct. 2021 While the next two flybys will likely not allow the probe to image the nightside, scientists will continue to use other instruments to study Venus' space environment. Julia Musto, Fox News, 11 Feb. 2022 Wood explained that, even on the nightside, the surface of Venus is about 860 degrees. Julia Musto, Fox News, 11 Feb. 2022 These atoms are carried over to the nightside by winds that reach more than 11,000 miles per hour (17,703 kilometers per hour). Ashley Strickland, CNN, 21 Feb. 2022 Webb will constantly face the nightside of Earth as the spacecraft and planet swoop around the sun in unison. Marcia Dunn, The Christian Science Monitor, 24 Dec. 2021 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'nightside.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Word History

First Known Use

1848, in the meaning defined above

Time Traveler
The first known use of nightside was in 1848

Dictionary Entries Near nightside

Cite this Entry

“Nightside.” Dictionary, Merriam-Webster, Accessed 4 Feb. 2023.

Last Updated: - Updated example sentences
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