発はっ光こう器きはっこうきMeanings1nounbioluminescent organ; photophoreTechnical term in biology for light-producing organs found in deep-sea fish, fireflies, and other organisms.深しん海かい魚ぎょの発はっ光こう器きは、獲え物ものをおびき寄よせるために使つかわれる。The photophores of deep-sea fish are used to lure prey.