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inertial system

American

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.

inertial system British

noun

Also called: inertial reference frame. a frame of reference within which bodies are not accelerated unless acted upon by external forces

"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

Etymology

Origin of inertial system

First recorded in 1950–55

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inertial system

Why don't they just use an inertial system...

From New York Times ● Apr. 23, 2018

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023