In human anatomy, the iris is the colored, muscular part of the eye surrounding the pupil. The iris is in front of the lens and behind the cornea and is bathed in front and behind by a fluid known as the aqueous humor.
1.the contractile, circular diaphragm forming the colored portion of the eye and containing an opening, the pupil, in its center. 2.any plant of the genusIris,having flowers with three upright petals and three drooping, petallike sepals. ...
Add new Web site: National Center For Biotechnological Information - PubMed Central - The Cellular and Molecular Biology of the Iris, an Overlooked Tissue. Gloria Lotha Oct 10, 2022 Add new Web site: Verywell Health - The Anatomy of the Iris. Gloria Lotha Aug 21, 2019 Media added. ...
late 14c. as the name of a flowering plant (Iris germanica); early 15c. in reference to the eye membrane, from Latiniris(pluralirides) "iris of the eye; iris plant; rainbow," from Greekiris(genitiveiridos) "a rainbow;" also "iris plant" and "iris of the eye," a word of uncertain...
WebMD's Eyes Anatomy Pages provide a detailed picture and definition of the human eyes. Learn about their function and problems that can affect the eyes.
Define iris copy. iris copy synonyms, iris copy pronunciation, iris copy translation, English dictionary definition of iris copy. n. The study of the iris of the eye, especially as associated with disease. ir′i·dol′o·gist n. American Heritage® Dic
Eye Anatomy | Diagram, Parts & Functions from Chapter 29 / Lesson 15 194K Learn about the anatomy, parts, and structure of the eye with scientific and layman vocabulary. Discover how the eye allows the passage of light and stimuli. Related...
Anatomy.the contractile, circular diaphragm forming the colored portion of the eye and containing a circular opening, the pupil, in its center. Botany.any plant of the genusIris,having showy flowers and sword-shaped leaves. Compareiris family. ...
The anatomy of such lesions is described, and the mechanical conditions under which they are produced are discussed. The explanations of these are illustrated by typical cases, from the literature, or from the Eye Clinic of Professor J. Meller of Vienna....
nounAn appearance resembling a rainbow; an appearance of the hues of a rainbow, as seen in sunlit spray, the spectrum of sunlight, etc.; any iridescence. nounA precious stone. nounInanatomy, a contraetile colored curtain suspended vertically in the aqueous humor of the eye, between the corn...