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noun, Geometry.
a solid angle at the center of a sphere subtending a section on the surface equal in area to the square of the radius of the sphere.
Abbreviation: sr.
an SI unit of solid angle; the angle that, having its vertex in the centre of a sphere, cuts off an area of the surface of the sphere equal to the square of the length of the radius sr
A unitless measure of solid angles. A solid angle projecting from the center of a sphere and cutting its surface has a measure of s/r2 steradians, where s is the surface area of the sphere cut out by the solid angle, and r is the radius of the sphere. See also radian.


Read Also:

  • Sterco-

    sterco- pref. Feces; fecal: stercoraceous.

  • Stercobilin

    stercobilin ster·co·bi·lin (stûr’kō-bī’lĭn, -bĭl’ĭn) n. A brown degradation product of hemoglobin present in feces.

  • Stercolith

    stercolith ster·co·lith (stûr’kə-lĭth’) n. See coprolith.

  • Stercoraceous

    [stur-kuh-rey-shuh s] /ˌstɜr kəˈreɪ ʃəs/ adjective, Physiology. 1. consisting of, resembling, or pertaining to dung or feces. stercoraceous /ˌstɜːkəˈreɪʃəs/ adjective 1. of, relating to, or consisting of dung or excrement stercoraceous ster·co·ra·ceous (stûr’kə-rā’shəs) or ster·co·ral (stûr’kər-əl) or ster·co·rous (-kər-əs) adj. Relating to or containing feces.

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