dayside

noun
day·​side | \ ˈdā-ˌsīd How to pronounce dayside (audio) \

Definition of dayside

: the side of a planet in sunlight

Examples of dayside in a Sentence

Recent Examples on the Web On the planet’s dayside, hydrogen molecules are ripped apart under the extreme temperatures, according to research published January 7 in The Astrophysical Journal Letters. Jennifer Leman, Popular Mechanics, "This Hot Jupiter Is So Hot Right Now," 28 Jan. 2020 These planets are tidally locked, so that the same side always faces the star, and depending on how much the heat gets redistributed, the dayside can be much hotter than the nightside. John Wenz, Ars Technica, "Lessons from scorching hot weirdo-planets," 22 Dec. 2019 The process repeats when the unfortunate molecules return to the dayside. Ashley Strickland, CNN, "How hot is it? The hottest-known exoplanet is so hot it rips apart its own molecules," 28 Jan. 2020 These planets are tidally locked, so that the same side always faces the star, and depending on how much the heat gets redistributed, the dayside can be much hotter than the nightside. John Wenz, Ars Technica, "Lessons from scorching hot weirdo-planets," 22 Dec. 2019 These planets are tidally locked, so that the same side always faces the star, and depending on how much the heat gets redistributed, the dayside can be much hotter than the nightside. John Wenz, Ars Technica, "Lessons from scorching hot weirdo-planets," 22 Dec. 2019 These planets are tidally locked, so that the same side always faces the star, and depending on how much the heat gets redistributed, the dayside can be much hotter than the nightside. John Wenz, Ars Technica, "Lessons from scorching hot weirdo-planets," 22 Dec. 2019 These planets are tidally locked, so that the same side always faces the star, and depending on how much the heat gets redistributed, the dayside can be much hotter than the nightside. John Wenz, Smithsonian, "What Astronomers Can Learn From Hot Jupiters, the Scorching Giant Planets of the Galaxy," 11 Oct. 2019 The exoplanet’s dayside is scorching, while its space-facing hemisphere sits out in the cold. Adam Mann, Scientific American, "Scientists Mull the Astrobiological Implications of an Airless Alien Planet," 19 Aug. 2019

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

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First Known Use of dayside

1827, in the meaning defined above

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Time Traveler for dayside

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The first known use of dayside was in 1827

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Last Updated

18 Feb 2020

Cite this Entry

“Dayside.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/dayside. Accessed 26 Feb. 2020.

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