luciferin
lu·ci·fe·rin
noun
1.
pigment occurring in luminescent organisms (as fireflies); emits heatless light when undergoing oxidation
Origin
From Latin lūcifer (“light bringer”) + English -in.
Related words
Broader terms
WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.