Steradian Definition

stĭ-rādē-ən
noun
The basic unit of solid angular measure in the SI system, equal to the solid angle subtended at the center of a sphere by an area, on its surface, that is equal to the square of its radius: one sphere equals 4π steradians.
Webster's New World
Synonyms:
  • sr

Other Word Forms of Steradian

Noun

Singular:
steradian
Plural:
steradians

Origin of Steradian

  • ste(reo)– radian

    From American Heritage Dictionary of the English Language, 5th Edition

  • ste(reo) + radian

    From Wiktionary

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steradian