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noundiaphragm consisting of thin overlapping plates that can be adjusted to change the diameter of a central opening
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nounplants with sword-shaped leaves and erect stalks bearing bright-colored flowers composed of three petals and three drooping sepals
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nounmuscular 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 eyetype of:
Synonyms & Similar Words
stop flag diaphragm membrane iris diaphragm fleur-de-lis sword lily iridaceous plant iris cristata iris foetidissima iris persica iris pseudacorus iris verna iris versicolor iris virginica iris xiphioides persian iris roast beef plant southern blue flag stinking gladwyn stinking iris yellow water flag beardless iris blue flag bulbous iris dwarf iris english iris gladdon gladdon iris bearded iris vernal iris yellow flag yellow iris tissue layer