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definition of the word steradian

by the Wiktionnary

Wikipedia has an article on:
Steradian

Wikipedia

ste(reo) + radian

Singular
steradian

Plural
steradians

steradian (plural steradians)

  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

Definition from Wiktionary
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