from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Emission of visible light by living organisms such as the firefly and various fish, fungi, and bacteria.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The emission of light by a living organism (such as a firefly).
from the GNU version of the Collaborative International Dictionary of English
- n. a type of luminescence produced by biological or biochemical processes, such as a glowworm glow or the action of luciferase on luciferin. A well-known example is that of firefly luminescence. See also luciferin.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. luminescence produced by physiological processes (as in the firefly)
bio- + luminescence (Wiktionary)