消光 しょうこう Meanings Noun, する verb, Intransitive passing one's time (used mainly in letters) extinction (of light) quenching (of fluorescence) Kanji 消 vanish. Read as ショウ. 光 light. Read as コウ. Words containing 消光 消光比 (しょうこうひ) extinction ratio Jinuma: Japanese Dictionary · Word lists