inertial system
noun Physics.
a frame of reference in which a body remains at rest or moves with constant linear velocity unless acted upon by forces: any frame of reference that moves with constant velocity relative to an inertial system is itself an inertial system.
Also called
inertial reference frame.
Compare
law of motion.
Origin of inertial system
First recorded in 1950–55
Words nearby inertial system
British Dictionary definitions for inertial system
inertial system
noun
a frame of reference within which bodies are not accelerated unless acted upon by external forces
Also called: inertial reference frame