dayglow

noun

day·​glow ˈdā-ˌglō How to pronounce dayglow (audio)
: airglow seen during the day

Examples of dayglow in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Rumpl's new Featherlite Puffy packs down small enough to fit into a purse or a small backpack, weighs one pound, and will keep your legs warmer than any pair of dayglow shell trousers. — Wes Siler, Outside Online, 14 Oct. 2020 The inexpensive, plastic tower lets babies and toddlers stack five hollow plastic rings around a dayglow yellow column. — Jonathan Bender, NBC News, 2 Dec. 2020 While costumed space aliens were a common, dayglow, and sometimes hilarious sight, no one reported seeing actual extraterrestrials or UFOs. — CBS News, 21 Sep. 2019

Word History

First Known Use

1951, in the meaning defined above

Time Traveler
The first known use of dayglow was in 1951

Rhymes for dayglow

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Browse Nearby Words

Day-Glo
dayglow
day hike
See all Nearby Words

Cite this Entry

“Dayglow.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/dayglow. Accessed 7 Jul. 2026.

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More from Merriam-Webster on dayglow

Britannica.com: Encyclopedia article about dayglow

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