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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:
Definition that contains iris
- bride Irish abbess; a patron saint of Ireland (453-523)
- russell Irish writer whose pen name was A.E. (1867-1935)
- harris Irish writer noted for his sexually explicit but unreliable autobiography (1856-1931)
- moore Irish poet who wrote nostalgic and patriotic verse (1779-1852)
- robinson Irish playwright and theater manager in Dublin (1886-1958)
- hamilton Irish mathematician (1806-1865)
- berkeley Irish philosopher and Anglican bishop who opposed the materialism of Thomas Hobbes (1685-1753)
- bridget Irish abbess; a patron saint of Ireland (453-523)
- wilde Irish writer and wit (1854-1900)
- usher Irish prelate who deduced from the Bible that Creation occurred in the year 4004 BC (1581-1656)