- 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.
- exhibiting or having the property of fluorescence
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.