[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.

Nearby words

  1. fluorene,
  2. fluoresce,
  3. fluorescein,
  4. fluorescence,
  5. fluorescence-activated cell sorter,
  6. fluorescent antibody technique,
  7. fluorescent antinuclear antibody test,
  8. fluorescent lamp,
  9. fluorescent microscope,
  10. fluorescent screen

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

Examples from the Web for fluorescent

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