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

But a step inside revealed bright fluorescent lights and a dozen fencers hard at work. — Elijah Polance, Hartford Courant, 5 July 2026

And the quickest way to do that is to actually get you in the office and under those fluorescent lights. — Colleen Batchelder, Forbes.com, 1 July 2026

Common household hazardous waste items include anti-freeze, motor oil, batteries, fluorescent bulbs, deck stains, pool chemicals, pesticides and household smoke detectors. — Post-Tribune, Chicago Tribune, 29 June 2026

This fluorescent bat did not fly into bright yellow road paint or dive into a bowl of saffron. — Laura Baisas, Popular Science, 24 June 2026

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 lightbulb
• 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