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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.
1950-55 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for inertial system
  • In other words, all the physical laws must have the same form in every inertial system.
British Dictionary definitions for inertial system

inertial system

a frame of reference within which bodies are not accelerated unless acted upon by external forces Also called inertial reference frame
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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