- retinal pigments
- the photopigments in retinal rods and cones that respond to certain colors of light and initiate the process of vision.
Medical dictionary. 2011.
retinal pigments
Look at other dictionaries:
retinal — I noun either of two yellow to red retinal pigments formed from rhodopsin by the action of light • Syn: ↑retinene • Hypernyms: ↑pigment • Substance Holonyms: ↑visual purple, ↑rhodopsin, ↑ … Useful english dictionary
PIGMENTS — Les substances naturelles colorées ont très tôt suscité la curiosité et l’intérêt des hommes. Le simple fait qu’elles soient visibles a stimulé leur étude tout en facilitant les techniques de recherche. L’emploi de préparations naturelles pour… … Encyclopédie Universelle
Retinal — Ret i*nal, n. (Chem.) A retinoid compound ({C20H28O}), closely related to vitamin A, which is a component of the visual pigments in the eye. It is also called {retinaldehyde} and {vitamin A aldehyde}. [PJC] … The Collaborative International Dictionary of English
retinal — 1. Relating to the retina. 2. Retinaldehyde; most commonly referring to the all trans form. r. dehydrogenase an oxidoreductase catalyzing the interconversion of retinaldehyde and NAD+ to retinoic acid and NADH … Medical dictionary
retinal — I. adjective Date: 1838 of, relating to, involving, or being a retina II. noun Etymology: retin + 3 al Date: 1944 a yellowish to orange aldehyde C20H28O derived from vitamin A that in combination with proteins forms the visual pigments of the… … New Collegiate Dictionary
retinal — 1. adjective Of or pertaining to the retina. 2. noun One of several yellow or red carotenoid pigments formed from rhodopsin by the action of light; retinene … Wiktionary
visual pigments — retinal p s … Medical dictionary
retinene — noun either of two yellow to red retinal pigments formed from rhodopsin by the action of light • Syn: ↑retinal • Derivationally related forms: ↑retinal (for: ↑retinal) • Hypernyms: ↑pigment … Useful english dictionary
rod — rodless, adj. rodlike, adj. /rod/, n., v., rodded, rodding. n. 1. a stick, wand, staff, or the like, of wood, metal, or other material. 2. a straight, slender shoot or stem of any woody plant, whether still growing or cut from the plant. 3. See… … Universalium
Rod — /rod/, n. a male given name, form of Roderick or Rodney. * * * (as used in expressions) Carew Rod eccentric and rod mechanism hot rod * * * ▪ measurement old English measure of distance equal to 16.5 feet (5.029 metres), with variations… … Universalium
