n. colored part of the eyeball surrounding the pupil (Anatomy); any of a number of plants having sword-shaped leaves and showy flowers

n. (Photography) adjustable diaphragm composed of thin overlapping plates that can be adjusted to regulate the amount of light entering an optical instrument

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Noun
1. plants with sword-shaped leaves and erect stalks bearing bright-colored flowers composed of three petals and three drooping sepals
(synonym) flag, fleur-de-lis, sword lily
(hypernym) iridaceous plant
(hyponym) bearded iris
(member-holonym) genus Iris
2. muscular diaphragm that controls the size of the pupil; it forms the colored portion of the eye
(hypernym) membrane, tissue layer
(part-holonym) eye, oculus, optic
(part-meronym) pupil
3. diaphragm consisting of thin overlapping plates that can be adjusted to change the diameter of a central opening
(synonym) iris diaphragm
(hypernym) diaphragm, stop

nf. iris, colored part of the eyeball surrounding the pupil (Anatomy); any of a number of plants having sword-shaped leaves and showy flowers, orris

adj. iris

nm. iris, colored part of the eyeball surrounding the pupil (Anatomy); any of a number of plants having sword-shaped leaves and showy flowers