蛍光物質 けいこうぶっしつ Meanings Noun fluorescent substance; phosphor See also: 蛍光体 (けいこうたい). Kanji 蛍 firefly. Read as ケイ. 光 light. Read as コウ. 物 thing. Read as ブツ. 質 quality. Read as シツ. Jinuma: Japanese Dictionary · Word lists