noun, Optics, Photography.
a composite diaphragm with a central aperture readily adjustable for size, used to regulate the amount of light admitted to a lens or optical system.
an adjustable diaphragm that regulates the amount of light entering an optical instrument, esp a camera. It usually consists of a number of thin metal leaves arranged so that they open out into an approximately circular aperture Sometimes shortened to iris
noun, Photography. 1. . noun 1. a camera shutter having a group of overlapping blades that open and close at the center when exposing film.
[ahy-ris] /ˈaɪ rɪs/ noun, plural irises, irides [ir-i-deez, ahy-ri-] /ˈɪr ɪˌdiz, ˈaɪ rɪ-/ (Show IPA) 1. Anatomy. the contractile, circular diaphragm forming the colored portion of the eye and containing a circular opening, the pupil, in its center. 2. Botany. any plant of the genus Iris, having showy flowers and sword-shaped leaves. Compare . 3. […]
- Iris explorer
mathematics, tool Numerical Algorithms Group (NAG)’s tool for developing visualisation applications via a visual programming environment. IRIS Explorer has a range of visualisation techniques, from simple graphs to multidimensional animation, that can help show trends and relationships in data. IRIS Explorer uses standard Open Inventor, ImageVision and OpenGL libraries as well as NAG’s own numerical […]
noun 1. the plant family Iridaceae, characterized by herbaceous plants having bulbs, corms, or rhizomes, sword-shaped grasslike leaves, and usually showy flowers, and including the blackberry lily, crocus, freesia, gladiolus, and iris.