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steradian Definition

ste·ra·dian (stə rā′dē 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: abbrev. sr

Etymology: ste(reo)- + radian

steradian Usage Examples

Noun used with modifier

  • pi: There are 4 pi steradians in a complete surrounding surface of the antenna.

Browse dictionary entries near steradian

  1. ‹ -ster
  2. ‹ ster
  3. ‹ stepwise
  4. ‹ stepson
  5. ‹ stepsister
  6. ‹ steppingstone
  7. ‹ stepping in front
  8. ‹ stepper
  9. ‹ stepped-up
  10. ‹ steppe
  1. stercoraceous ›
  2. stercoricolous ›
  3. sterculia ›
  4. stere ›
  5. stereo ›
  6. stereo- ›
  7. stereobate ›
  8. stereochemistry ›
  9. stereogram ›
  10. stereograph ›