steradian Hear it!

steradian Definition

ste·ra·dian (stə 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: 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