Strob, strob, n. the angular velocity of one radian per second.
"angle subtended at the center of a circle by an arc equal in length to the radius," 1879, from radius.
radian ra·di·an (rā'dē-ən)
n.
Abbr. rad
A unit of angular measure equal to the angle subtended at the center of a circle by an arc equal in length to the radius of the circle.