a combining form of Latin origin used, with the meanings “rainbow,” “iridescent,” “iris (of the eye),” “Iris (the genus),” and “iridium,” in the formation of compound words:
iridopupillary; iridosmine; iridotomy.
combining form
denoting the iris of the eye or the genus of plants: iridaceous
denoting a rainbow: iridescent

irido- or irid-
Iris of the eye: iridectomy.


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  • Iridoavulsion

    iridoavulsion ir·i·do·a·vul·sion (ĭr’ĭ-dō-ə-vŭl’shən, ī’rĭ-) n. A tearing away of the iris.

  • Iridocapsulitis

    [ir-i-doh-kap-suh-lahy-tis, -kap-syoo-, ahy-ri-] /ˌɪr ɪ doʊˌkæp səˈlaɪ tɪs, -ˌkæp syʊ-, ˌaɪ rɪ-/ noun, Pathology. 1. inflammation of the iris and the of the lens.

  • Iridocele

    iridocele ir·i·do·cele (ĭr’ĭ-dō-sēl’, ī-rĭd’ə-, ĭ-rĭd’ə-) n. Protrusion of a portion of the iris through a corneal defect.

  • Iridocyclectomy

    iridocyclochoroiditis ir·i·do·cy·clo·cho·roid·i·tis (ĭr’ĭ-dō-sī’klō-kôr’oi-dī’tĭs, ī’rĭ-) n. Inflammation of the iris, the ciliary body, and the choroid.

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