Pupil of the Eye: Definition, Anatomy & Function - Cleveland Clinic
The pupil is the black opening in the middle of the colored part of your eye (iris). The pupil gets bigger or smaller in response to …
PUPIL Definition & Meaning - Merriam-Webster
2 days ago · The meaning of PUPIL is a child or young person in school or in the charge of a tutor or instructor : student.
Pupil - Wikipedia
In optical terms, the anatomical pupil is the eye's aperture and the iris is the aperture stop. The image of the pupil as seen from …
PUPIL | English meaning - Cambridge Dictionary
pupil noun [C] (EYE PART) the circular, black area in the center of the eye that gets larger and smaller and lets in light (Definition of …
PUPIL Definition & Meaning | Dictionary.com
PUPIL definition: a person, usually young, who is learning under the close supervision of a teacher at school, a private tutor, or the …
Human eye - Pupil, Iris, Retina | Britannica
Jun 8, 2026 · The amount of light entering the eye is restricted by the aperture in the iris, the pupil. In a dark room, a person’s pupils …
Pupil - Definition and Detailed Illustration - All About Vision
Feb 27, 2019 · The pupil is the opening in the center of the iris (the structure that gives our eyes their color). The function of the pupil …
Pupil (eye) - Simple English Wikipedia, the free encyclopedia
The main reason why we have a pupil is to regulate the light which travels to the retina. The reason why it has no colour is because …
PUPIL | definition in the Cambridge English Dictionary
pupil noun [C] (EYE PART) the circular, black area in the center of the eye that gets larger and smaller and lets in light (Definition of …
Pupil Function and Disorders That Affect It - Verywell Health
May 21, 2026 · The pupil controls how much light enters the eye, allowing for clear vision. In low light, pupils widen to let in more …