洹 river in Henan province 9 strokes. Readings オン (on reading): 泥洹 (ないおん) nirvana エン (on reading) カン (on reading) Components 一 radical one ⺡ radical water, left-side form of 水 日 radical sun; day Words using 洹 泥洹 (ないおん) nirvana Jinuma: Japanese Dictionary · Word lists