pu·pil1 / ˈpyoōpəl/ •
n. a student in school.pu·pil2 •
n. the dark circular opening in the center of the iris of the eye, varying in size to regulate the amount of light reaching the retina.DERIVATIVES: pu·pil·lar·y / ˈpyoōpəˌlerē/ (also pu·pil·ar·y) adj.
In the structure of the eye
, circular aperture through which light falls onto the lens
; it is located in the centre of the iris
. Its diameter changes by reflex action of the iris to control the amount of light entering the eye.
circular opening in the iris of the eye. XVI. — (O)F. pupille
or L. pūpilla
, dim. of pūpa
girl, doll, pupil of the eye (see prec.). The application of the L. words to the pupil of the eye is based on, or parallel to, that of Gr. kórē-
maiden, girl, doll, pupil (the allusion being to the tiny images of persons and things that may be seen therein).
orphan who is a minor and hence a ward XIV; one under instruction XVI. — (O)F. pupille
m. and fem. or its source, L. pūpillus
orphan, ward, dim. of pūpus
pupil (pew-pil) n.
the circular opening in the centre of the iris, through which light passes into the lens of the eye.