theory of relativity
Americannoun
Etymology
Origin of theory of relativity
First recorded in 1960–65
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.
This streamlined version—co-written with Leonard Mlodinow, a physicist and popular-science author—retains explanations of vital topics, such as the curvature of spacetime and Einstein’s theory of relativity, but dispenses with the drier sections.
From The Wall Street Journal • May 19, 2026
Einstein's general theory of relativity, on the other hand, describes gravity and the motion of planets, stars, and galaxies.
From Science Daily • Mar. 9, 2026
Today's standard picture of the universe is built on Einstein's general theory of relativity and the standard model of particle physics.
From Science Daily • Jan. 11, 2026
Cosmologists use Einstein's general theory of relativity along with the Friedmann equations to describe how the universe changes over time.
From Science Daily • Jan. 11, 2026
Like quantum mechanics, the theory of relativity was born in light; this time it was the speed of light that caused the trouble.
From "Zero: The Biography of a Dangerous Idea" by Charles Seife
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
