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steradian

Definition from Dictionary, a free dictionary
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Marcus T. Cicero
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English

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Etymology

ste(reo) + radian

Noun

Singular
steradian

Plural
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steradian ({{{1}}})
  1. (geometry) In the International System of Units, the derived unit of solid angle; the solid angle subtended at the centre of a sphere of radius r by a portion of the surface of the sphere that has area r2. Symbol: sr

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