Question

Define tendential motion

Answer 1

Definition of tangential motion. : proper motion of a star corrected for the effect of distance and expressed in linear units usually kilometers per second and being that component of the star'smotion with respect to the solar system that is at right angles to the line of sight.

Answer 2

tangential motion....the component of the linear motion of the star with respect to the sun measured along a line perpendicular to its line of sight and expressed in mils or kilometres per second....!