fluorescent

adjective

fluo·​res·​cent flu̇-ˈre-sᵊnt 

flȯ-

1

: having or relating to fluorescence

2

: bright and glowing as a result of fluorescence

fluorescent inks

broadly : very bright in color

fluorescent noun

fluorescently adverb

Examples of fluorescent in a Sentence

Recent Examples on the Web

Instead of fluorescent colors and sparkles, they've been adapted to be as pared-down as possible, with thin straps and sometimes kitten heels —as Miu Miu demonstrated in its seasonal runway show. —Michel Mejía, Glamour, 1 June 2025

In September 2024, the U.S. Department of Defense invested $4.2 million in Rare Earth Salts, a startup that aims to extract the oxides from domestic recycled products such as fluorescent light bulbs. —Evelyn Cheng, CNBC, 28 May 2025

This keeps black hues truly black, even under fluorescent lights or studio spotlights, and helps prevent eye strain even after prolonged viewing. —Mitch Wallace, Forbes.com, 15 May 2025

Shauna then spies a swarm of moths attracted to a fluorescent light in the ceiling, dooming themselves to fly toward nothingness again and again and again. —Erin Qualey, Vulture, 28 Mar. 2025

Word History

First Known Use

1853, in the meaning defined at sense 1

Phrases Containing fluorescent

• compact fluorescent bulb
• compact fluorescent lamp
• compact fluorescent light
• compact fluorescent light bulb
• fluorescent lamp

Rhymes for fluorescent

• depressant
• incessant
• putrescent
• quiescent
• senescent
• suppressant
• acquiescent
• adolescent
• arborescent
• coalescent
• convalescent
• deliquescent

Kids Definition

fluorescent

adjective

flu·​o·​res·​cent

ˌflu̇(-ə)r-ˈes-ᵊnt

1

: having or relating to fluorescence

2

: very bright in color

fluorescent markers