| NOUN | substance | luciferin | pigment occurring in luminescent organisms (as fireflies) |
|---|
| Meaning | Pigment occurring in luminescent organisms (as fireflies); emits heatless light when undergoing oxidation. | |
|---|---|---|
| Broader | animal pigment | Pigment occurring in animals |
| Spanish | luciferina | |
| Catalan | luciferina | |
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