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Definition of dayglo

dayglo

/ˈdeɪ.ɡloʊ/
day · glo
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dayglo Lexical Profile

dayglo Game Scores & Validity

• adjective

1

Having an intensely bright, fluorescent, or neon color that appears to glow in daylight.

Example

"The cyclists wore dayglo vests so that motorists could spot them easily in the fog."

Synonyms
View all synonyms for dayglo
Antonyms
View all antonyms for dayglo

• noun

1

A fluorescent pigment, dye, or paint that glows brightly in daylight or under ultraviolet light, originally sold as a proprietary brand.

Example

"The poster was printed using vibrant splashes of orange and green dayglo."

• Rhymes for dayglo

• Nearby Words

daycation
daydream
daydreamer
dayglo
daylight
daylights
daylily

Word Origin & Etymology

Coined in the 1940s as the trademark Day-Glo by brothers Bob and Joe Switzer for their line of daylight-fluorescent pigments and paints.

Cite this Entry

Wordmom. (2026). Definition of Dayglo. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/dayglo
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