[floo-res-uh nt, flaw-, floh-]


possessing the property of fluorescence; exhibiting fluorescence.
strikingly bright, vivid, or glowing: plastic toys in fluorescent colors.


a lighting fixture that utilizes a fluorescent lamp.

Origin of fluorescent

First recorded in 1850–55; fluor- + -escent
Related formsnon·fluo·res·cent, adjectiveun·fluo·res·cent, adjective
Can be confusedfluorescent fluoridation fluoride
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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British Dictionary definitions for fluorescent



exhibiting or having the property of fluorescence
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for fluorescent

1853, from fluor- + -escent (see fluorescence). The fluorescent electric lamp patent was applied for in 1896 by U.S. inventor Thomas A. Edison, but such lights were rare before 1938.

Online Etymology Dictionary, © 2010 Douglas Harper