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.
Few ideas in modern science have reshaped our understanding of reality more profoundly than space-time — the interwoven fabric of space and time at the heart of Albert Einstein’s theory of relativity.
From Science Daily • Jun. 8, 2026
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
According to Einstein's theory of relativity, gravity alters the flow of time.
From Science Daily • Dec. 30, 2025
I believed in the theory of relativity and everything else I’d learned in Miss Kirker’s classes.
From "Sir Fig Newton and the Science of Persistence" by Sonja Thomas
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.
