I'ris

[G. rainbow] i. The anterior division of the vascular tunic of the eye, a disc-like diaphragm, perforated in the center (the pupil), attached marginally to the ciliary body; it is composed in large part of muscular ti ue by which the size of the pupil is regulated. 2. Blue fiag, flag lily, iris versicolor (N.P.), the dried rhizome and roots of Iris versicolor; occasionally employed as a cathartic and hepatic stimulant like podophyllum, in doses of gr. 10-20 (0.6-1.3). 3. (N.F.) Orris root, the rhizome of Iris flor ent in a, I. germanic a, or /. pallid a; employed in the manufacture of various toilet articles. 4. Occurring in concentric rings, noting certain skin lesions, such as erythema* iris. i. bombe (e-res' bawn-ba') rPr. bulging], a condition occurring in posterior annular synechia, in which an increase of fluid in the posterior chamber causes a forward bulging of the non-adherent portion of the iris. i. Tersic'olor (N.P.), iris (2). pil'lars of the i., lig amentum pectin a tum irid is [BNA]. trem'- ulous iridodonesis, hippus. absence, aniridia, irideremia. eversion, irid ectropium iridectropy. excision of parL iridectomy, corectomy. fi ure, coloboma irid is, iridoschisis, iridocoloboma. hemorrhage, iridemia, iridasmia. incision, iridotomy, iritomy. inflammation, iritis; iridochorioiditis (involving chorioid); iridocyclitis (involving ciliary body), iridoperiphacitis (involving capsule of lens) iridocyclo,