光こう明みょう真しん言ごんMeaningsNoun1. Mantra of LightKanji used光ray明bright真truth言sayPitch accentこうみょうしんごんComposed of光こう明みょうbright light; hope; bright future; light emanating from a buddha or bodhisattva, symbolizing their wisdom and compassionNoun真しん言ごんmantra; Shingon sectNoun