# noctilucine

> English word · Noun

## Definitions
1. A nitrogenous substance in fireflies, glowworms and marine animals, once believed to be responsible for their luminescence.

## Etymology
From Latin noctilūca (“firefly”) + -ine. Term coined by British scientist Thomas Lamb Phipson (1833–1908). It appeared first in his article On noctilucine, the phosphorescent principle of luminous animals, published in The chemical new, vol. 32, no. 832, on November 5, 1875.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/noctilucine