Associations to the word «Iris»

IRIS, noun. (botany) A plant of the genus Iris, common in the northern hemisphere, and generally having attractive blooms (See on Wikipedia.Wikipedia:Iris (plant)).

IRIS, noun. (anatomy) The contractile membrane perforated by the pupil, which adjusts to control the amount of light reaching the retina, and which forms the colored portion of the eye (See on Wikipedia.Wikipedia:Iris (anatomy)).

IRIS, noun. (photography) (cinematography) A diaphragm used to regulate the size of a hole, especially as a way of controlling the amount of light reaching a lens.

IRIS, noun. (poetic) A rainbow, or other colourful refraction of light.

IRIS, noun. (electronics) A constricted opening in the path inside a waveguide, used to form a resonator.

IRIS, noun. (zoology) The inner circle of an oscillated color spot.

IRIS, verb. (of an aperture, lens, or door) To open or close in the manner of an iris.

IRIS, proper noun. A taxonomic genus within the family Iridaceae   — the irises.

IRIS, proper noun. A taxonomic genus within the family Tarachodidae   — certain of the mantises.

IRIS, proper noun. (Greek god) A messenger of the gods, and goddess of rainbows.

IRIS, proper noun. A female given name; a flower name used since the end of the 19th century.

IRIS, proper noun. (astronomy) Short for 7 Iris, a main belt asteroid.

IRIS DIAPHRAGM, noun. An adjustable diaphragm by which the diameter of an approximately circular opening may be controlled, as for regulating the aperture of a lens; it consists of a number of movable thin curved plates fastened at regular intervals around the inside of a ring, the positions of which are simultaneously adjusted by a single knob on the outside of the lens. It is used in cameras and microscopes.

IRIS DIAPHRAGMS, noun. Plural of iris diaphragm

IRIS DILATOR MUSCLE, noun. A muscle of the eye, serving to dilate the iris.

IRIS DILATOR MUSCLES, noun. Plural of iris dilator muscle

IRIS PIGMENTED EPITHELIUM, noun. The black colored layer of the iris, located behind the iris.

IRIS PSEUDACORUS, proper noun. A taxonomic species within the family Iridaceae   — the yellow flag.

IRIS, noun. Plants with sword-shaped leaves and erect stalks bearing bright-colored flowers composed of three petals and three drooping sepals.

IRIS, 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.

IRIS, noun. Diaphragm consisting of thin overlapping plates that can be adjusted to change the diameter of a central opening.