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Newtonian

American

[noo-toh-nee-uhn, nyoo-] / nuˈtoʊ ni ən, nyu- /

adjective

of or relating to Sir Isaac Newton or to his theories or discoveries.

Newtonian physics.

Newtonian British

/ njuːˈtəʊnɪən /

adjective

of, relating to, or based on the theories of Sir Isaac Newton

"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

Other Word Forms

Derived Forms

Etymology

Origin of Newtonian

First recorded in 1705–15; Newton + -ian

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Unlike Babson, who said he used Newtonian physics to divine the direction of the market, there’s real market logic behind Burry’s latest call.

From The Wall Street Journal • May 13, 2026

"We tested several ideas, including purely Newtonian effects and precession driven by the magnetar's magnetic fields, but only Lense-Thirring precession matched the timing perfectly," Farah explained.

From Science Daily • Mar. 11, 2026

Monjo’s theory helps unify scientific concepts of Newtonian gravity with our knowledge of electromagnetism.

From Salon • Nov. 13, 2024

One suggestion is modified Newtonian dynamics, or MOND.

From Scientific American • Oct. 25, 2023

One day we may discover that some of our most cherished forms of knowledge are as obsolete as epicycles, phlogiston, caloric, the electromagnetic aether and, indeed, Newtonian physics.

From "The Invention of Science" by David Wootton

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