pupil
Review kanji at the right time with spaced repetition, remember more for longer, and track your progress.
暗いと瞳孔が広がる。
The pupil dilates in the dark.
医者は瞳孔の反応を調べた。
The doctor checked the pupil reaction.
強い光で瞳孔が縮んだ。
The pupil shrank in the strong light.