| iris |
plants with sword-shaped leaves and erect stalks bearing bright-colored flowers composed of three petals and three drooping sepals muscular diaphragm that controls the size of the pupil; it forms the colored portion of the eye diaphragm consisting of thin overlapping plates that can be adjusted to change the diameter of a central opening
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| iron |
a heavy ductile magnetic metallic element; is silver-white in pure form but readily rusts; used in construction and tools and armament; plays a role in the transport of oxygen by the blood a golf club that has a relatively narrow metal head implement used to brand live stock press and smooth with a heated iron; "press your shirts"; "she stood there ironing" cast-iron: extremely robust; "an iron constitution" home appliance consisting of a flat metal base that is heated and used to smooth cloth
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| iron lung |
respirator that produces alternations in air pressure in a chamber surrounding a patient's chest to force air into and out of the lungs thus providing artificial respiration
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| iridescent |
changeable: varying in color when seen in different lights or from different angles; "changeable taffeta"; "chatoyant (or shot) silk"; "a dragonfly hovered, vibrating and iridescent" having a play of lustrous rainbow-like colors; "an iridescent oil slick"; "nacreous (or pearlescent) clouds looking like mother-of-pearl"; "a milky opalescent (or opaline) luster"
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| iron overload |
hemochromatosis: pathology in which iron accumulates in the tissues; characterized by bronzed skin and enlarged liver and diabetes mellitus and abnormalities of the pancreas and the joints
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