Einstein
Americannoun
-
Albert 1879–1955, German physicist, U.S. citizen from 1940: formulator of the theory of relativity; Nobel Prize 1921.
-
Alfred 1880–1952, German musicologist in U.S.
-
(lowercase) a unit of radiant energy, equal to the energy of radiation that is capable of photochemically changing one mol of a photosensitive substance.
noun
Other Word Forms
Derived Forms
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.
In 1935, while studying the behavior of particles in regions of extreme gravity, Einstein and Rosen introduced what they called a “bridge”: a mathematical link between two perfectly symmetrical copies of spacetime.
From Science Daily • May 22, 2026
Proposed by Albert Einstein in 1915, general relativity describes gravity as the bending of spacetime by mass, similar to how a heavy object distorts a stretched surface.
From Science Daily • Apr. 19, 2026
A hundred years ago Einstein himself held to the then-standard belief that the universe had no beginning.
From The Wall Street Journal • Apr. 16, 2026
In 1931, the Nobel Prize-winning physicist Albert Einstein was spending his first winter at Caltech, and he wrote to a friend, “Here in Pasadena, it is like Paradise. Always sunshine and clear air …”
From Los Angeles Times • Mar. 26, 2026
Like Einstein had said, “Imagination is more important than knowledge.”
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.