noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   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
2. 2
   the unit of solid angle adopted under the Systeme International d'Unites wordnet

Synonyms

All synonyms

sr

Etymology

ste(reo) + radian