Definition of


  1. (noun, plant) plants with sword-shaped leaves and erect stalks bearing bright-colored flowers composed of three petals and three drooping sepals
  2. (noun, body) muscular 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 eye
  3. (noun, artifact) diaphragm consisting of thin overlapping plates that can be adjusted to change the diameter of a central opening

via WordNet, Princeton University

Origin of the word Iris

  1. late 14c., "prismatic rock crystal," from L. iris (pl. irides) "iris of the eye, iris plant, rainbow," from Gk. iris (gen. iridos) "a lily, iris of the eye," originally "messenger of the gods," personified as the rainbow. The eye region was so called (1520s in English) for being the colored part. more

via Online Etymology Dictionary, ©2001 Douglas Harper

Words that sound like Iris

irak, iraki, iraq, iraqi, iris kochii, irish, irish sea, irish whiskey, irish whisky, irk, iroquois, irs

via soundex() Hash Matches

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Word of the Moment


any of several annual Welsh festivals involving artistic competitions (especially in singing)