| iridaceous | (adjective) of or pertaining to or characteristic of plants of the family Iridaceae | - |
|---|
| iridectomy | (noun) an eye operation that treats closed-angle glaucoma by surgical removal of part of the iris of the eye | - |
|---|
| iridesce | (verb) be iridescent | - |
|---|
| iridescence | (noun) the visual property of something having a milky brightness and a play of colors from the surface | Synonyms: opalescence |
|---|
| iridescent | (adjective) having a play of lustrous rainbow colors | Synonyms: nacreous, opalescent, opaline, pearlescent |
|---|
| (adjective) varying in color when seen in different lights or from different angles | Synonyms: changeable, chatoyant, shot |
| iridic | (adjective) of or relating to the iris of the eye | - |
|---|
| (adjective) of or containing iridium | - |
| iridium | (noun) a heavy brittle metallic element of the platinum group; used in alloys; occurs in natural alloys with platinum or osmium | Synonyms: atomic number 77, Ir |
|---|
| iridocyclitis | (noun) inflammation of the iris and ciliary body of the eye | - |
|---|
| iridokeratitis | (noun) inflammation of the iris and cornea of the eye | - |
|---|
| iridoncus | (noun) swelling of the iris of the eye | - |
|---|
| iridosmine | (noun) a hard and corrosion resistant mineral that is a natural alloy of osmium and iridium (usually containing small amounts of rhodium and platinum); used in needles and pen nibs etc. | Synonyms: osmiridium |
|---|
| iridotomy | (noun) a surgical procedure that makes an incision in the iris of the eye in order to enlarge the pupil or to treat closed-angle glaucoma | - |
|---|
| iris | (noun) diaphragm consisting of thin overlapping plates that can be adjusted to change the diameter of a central opening | Synonyms: iris diaphragm |
|---|
| (noun) 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 | - |
| (noun) plants with sword-shaped leaves and erect stalks bearing bright-colored flowers composed of three petals and three drooping sepals | Synonyms: flag, fleur-de-lis, sword lily |
| iritic | (adjective) of or relating to located near the iris of the eye | - |
|---|
| iritis | (noun) inflammation of the iris | - |
|---|