day·​glow | \ ˈdā-ˌglō How to pronounce dayglow (audio) \

Definition of dayglow

: airglow seen during the day

Examples of dayglow in a Sentence

Recent Examples on the Web 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 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 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

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

First Known Use of dayglow

1951, in the meaning defined above

Learn More About dayglow

Time Traveler for dayglow

Time Traveler

The first known use of dayglow was in 1951

See more words from the same year

Dictionary Entries Near dayglow



day hike

See More Nearby Entries 

Statistics for dayglow

Cite this Entry

“Dayglow.” Dictionary, Merriam-Webster, Accessed 2 Jul. 2022.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

More from Merriam-Webster on dayglow Encyclopedia article about dayglow


Test Your Vocabulary

Which Word Does Not Belong?

  • one green toy robot amidst many red toy robots
  • Which of these words does not mean "nonsense"?
Spell It

Can you spell these 10 commonly misspelled words?

Universal Daily Crossword

A daily challenge for crossword fanatics.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!