Definitions

1. noun

A unit of solid angle, equal to the angle subtended at the centre of a sphere by a square whose sides are the radius of the sphere.

“The telescope’s field of view was measured in steradians to determine its angular resolution.”

2. verb

To direct or point (a beam of light, etc.) in a particular direction.

“The astronomer steraded the telescope at the distant star to get a clearer view.”