a bioluminescent protein extracted from certain jellyfish that emits light when in contact with calcium or strontium ions: used in research to detect and locate calcium
See aequorin in American Heritage Dictionary 4
(ē-kwôrˈĭn, ē-kwŏrˈ-)
noun
A protein secreted by certain jellyfish that interacts with seawater to produce bioluminescent light.