pupil

英語（米国） (en-US) 英語（イギリス） (en-GB)

IPA（発音記号）

/ˈpjuːpəl/

名詞

(anatomy) The hole in the middle of the iris of the eye, through which light passes to be focused on the retina. / (zoology) The central dark part of an ocellated spot.

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The doctor examined the patient's pupil to check its reaction to light.

詳細

意味（1）

(anatomy) The hole in the middle of the iris of the eye, through which light passes to be focused on the retina.

There are sharks with round pupils, sharks with slitlike pupils, and some with pupils that expand and contract with the amount of light available. As unimpressive as this might sound to people who are used to having their pupils dilate and contract regularly, realize that no bony fish has this modification of the eye.

詳細

意味（2）

(zoology) The central dark part of an ocellated spot.

pupils （ plural ）