Noun
-
diaphragm consisting of thin overlapping plates that can be adjusted to change the diameter of a central opening
- iris diaphragm -
muscular diaphragm that controls the size of the pupil which in turn controls the amount of light that enters the eye
it forms the colored portion of the eye
-
plants with sword-shaped leaves and erect stalks bearing bright-colored flowers composed of three petals and three drooping sepals
- fleur de lis - sword lily