Breadcrumb Home > Thesaurus > I Cite Synonyms of inertial reference frame Find synonyms for: Noun1. inertial reference frame, inertial frame, coordinate system, frame of reference, reference system, reference frameusage: a coordinate system in which Newton's first law of motion is validWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. TrendingHere are the facts and trivia that people are buzzing about. February 2021 Current Events: US News The Berlin Conference and the Partition of Africa The Implied Powers of Congress Noble Titles and Ranks in a Monarchy Keeping Your Brain Active in a COVID-19 World The Manchu Related Content Daily Word Quiz: protean Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language