radian


radian
The angle subtended at the center of a circle by an are equal in length to its radius. A radian is an SI (Système international d’unités, or international system) unit most commonly used in sight calculations and other aiming problems. Its short form is rad, and its value is equal to 57°17’44.8”, or one rad = 57.2958°.

Aviation dictionary. 2014.

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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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