(?), n.;
pl. E. Irises (#), L. Irides (#).
[L. iris, iridis, the goddess, Gr. , , the rainbow, iris of the eye, the plant Iris. Cf. Orris.] 1. (Class. Myth.) The goddess of the rainbow, and swift-footed messenger of the gods. Shak.
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2. The rainbow. Sir T. Browne.
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3. An appearance resembling the rainbow; a prismatic play of colors. Tennyson.
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4. (Anat.) The contractile membrane perforated by the pupil, and forming the colored portion of the eye. See Eye.
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5. (Bot.) A genus of plants having showy flowers and bulbous or tuberous roots, of which the flower-de-luce (fleur-de-lis), orris, and other species of flag are examples. See Illust. of Flower-de-luce.
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6. (Her.) See Fleur-de-lis, 2.
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7. (Zol.) the inner circle of an oscillated color spot.
[Webster 1913 Suppl.]

8. same as iris diaphragm.


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