瞳孔散大 どうこうさんだい Meanings Noun pupil dilation; mydriasis See also: 散瞳 (さんどう). Kanji 瞳 pupil. Read as ドウ. 孔 aperture. Read as コウ. 散 scatter. Read as サン. 大 big. Read as ダイ. Word lists Medicine Jinuma: Japanese Dictionary · Word lists