radian

radian
A supplementary SI unit of plane angle. [L. radius, ray]

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ra·di·an 'rād-ē-ən n a unit of plane angular measurement that is equal to the angle at the center of a circle subtended by an arc equal in length to the radius

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ra·di·an (rad) (raґde-ən) [from radius] the SI unit of measurement of plane angles, equal to the angle subtended to the center of a circle by an arc whose length is equal to the radius of the circle. One radian equals 360°/2π or approximately 57.296°.

Medical dictionary. 2011.

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  • radian — [ radjɑ̃ ] n. m. • 1904; mot angl. 1879; du lat. radius « rayon » ♦ Métrol. Unité de mesure d angle plan (symb.rad). 180° valent π radians. ⊗ HOM. Radiant. ● radian nom masculin ( …   Encyclopédie Universelle

  • radian — RADIÁN, radiani, s.m. Unitate de măsură pentru unghiuri, egală cu un unghi la centrul unui cerc cuprinzând un arc de cerc a cărui lungime este egală cu raza cercului [Pr:. di an] – Din fr. radian. Trimis de RACAI, 13.09.2007. Sursa: DEX 98 … …   Dicționar Român

  • Radián — Saltar a navegación, búsqueda El radián es la unidad de ángulo plano en el Sistema Internacional de Unidades. Representa el ángulo central en una circunferencia que subtiende un arco cuya longitud es igual a la del radio. Su símbolo es rad. Hasta …   Wikipedia Español

  • Rädian — Rädian, Gott der Lappländer, welcher die frommen Seelen der Verstorbenen zu sich in den Himmel nahm, daher der Aufenthalt der Guten auch Rädian Aimo genannt …   Pierer's Universal-Lexikon

  • radián — (Del ingl. radian, y este del lat. radius, radio1). m. Geom. Unidad de ángulo plano del Sistema Internacional equivalente a uno cuyo arco tiene igual longitud que el radio. (Símb. rad) …   Diccionario de la lengua española

  • radian — [rā′dē ən] n. [< RADIUS] the basic unit of plane angle in the SI system, equal to 57°, 17′, 44.8″ (57.29578°, the angle formed at the center of a circle by two radii cutting off an arc whose length is equal to the radius of the circle): one… …   English World dictionary

  • Radian — Ra di*an (r[=a] d[i^]*an), n. [From {Radius}.] (Math.) An arc of a circle which is equal to the radius, or the angle measured by such an arc. [1913 Webster] …   The Collaborative International Dictionary of English

  • radian — 1879, from RADIUS (Cf. radius) …   Etymology dictionary

  • radián — sustantivo masculino 1. Área: geometría Unidad de medida de ángulos que corresponde al ángulo central de una circunferencia en el que la longitud del arco y la del radio son iguales …   Diccionario Salamanca de la Lengua Española

  • radian — ► NOUN ▪ a unit of measurement of angles equal to about 57.3°, equivalent to the angle subtended at the centre of a circle by an arc equal in length to the radius …   English terms dictionary

  • Radian — For other uses, see Radian (disambiguation). mrad redirects here. For millirads, see Rad (unit). An angle of 1 rad …   Wikipedia

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