Iris

ī′ris, n. the rainbow: an appearance resembling the rainbow: the contractile curtain perforated by the pupil, and forming the coloured part of the eye (also I′rid ): the fleur-de-lis, or flag flower:— pl. I′rises .— adjs. I′ridal , Irid′ian , exhibiting the colours of the iris or rainbow: prismatic.— ns. Irides′cence , Iridisā′tion .— adjs. Irides′cent , coloured like the iris or rainbow; I′ridine , iridescent.— v.t. Ir′idise .— adjs. I′risāted , rainbow-coloured; Ir′ised , showing colours like the rainbow.— ns. Irī′tis , Iridī′tis , inflammation of the iris of the eye. [L. iris , irid is —Gr. iris , iridos , the rainbow.]