Einstein

American  

[ahyn-stahyn, ahyn-shtahyn] / ˈaɪn staɪn, ˈaɪnˌʃtaɪn /

noun

1. Albert 1879–1955, German physicist, U.S. citizen from 1940: formulator of the theory of relativity; Nobel Prize 1921.

2. Alfred 1880–1952, German musicologist in U.S.

3. (lowercase) a unit of radiant energy, equal to the energy of radiation that is capable of photochemically changing one mol of a photosensitive substance.

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Einstein British  

/ ˈaɪnstaɪn /

noun

1. Albert. 1879–1955, US physicist and mathematician, born in Germany. He formulated the special theory of relativity (1905) and the general theory of relativity (1916), and made major contributions to the quantum theory, for which he was awarded the Nobel prize for physics in 1921. He was noted also for his work for world peace

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Einstein Scientific  

/ īn′stīn′ /

1. German-born American theoretical physicist whose theories of Special Relativity (1905) and General Relativity (1916) revolutionized modern thought on the nature of space and time and formed a theoretical base for the exploitation of atomic energy. He won the 1921 Nobel Prize for physics for his explanation of the photoelectric effect.

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Other Word Forms

• Einsteinian
  adjective

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Example Sentences

See Examples For:

Einstein

"By revealing this previously hidden soft X-ray phase, Einstein Probe opens a new window for studying neutron star merger remnants and may ultimately help constrain the neutron star equation-of-state."

From Science Daily ● Oct. 8, 2026

The event, designated EP250704a/GRB 250704B, was detected on July 4, 2025, by the SVOM, Insight-HXMT and Einstein Probe satellites.

From Science Daily ● Sep. 30, 2026

I daydream about the kishka dog in “Eat Jewish,” mourn Einstein Bros.’ discontinued bagel dog and would, without much arm-twisting, once again pay $28 for pigs in a blanket at the Ralph Lauren Club.

From Salon ● Sep. 7, 2026

Church purchase plan would honour 'Scotland's forgotten Einstein'

From BBC ● Sep. 4, 2026

The Titan was ten feet tall, with wild silver Einstein hair, pure silver eyes, and muscular arms protruding from a ripped-up blue janitor’s uniform.

From "The House of Hades" by Rick Riordan

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