einstein

IPA/ˈaɪnstaɪn/
KK[ˈaɪnstaɪn]IPA/ˈaɪnstaɪn/

einstein — noun

1. a German-born physicist who later became a US citizen and is known around the wo

1.nounB1
Definition

a German-born physicist who later became a US citizen and is known around the world for developing the theory of relativity — the idea that time, space, and motion are not fixed but change depending on how fast someone is moving. His work completely changed the way scientists think about the universe.

Example

Albert Einstein developed his famous theory of relativity while working in a patent office in Switzerland.

proper noun + past tense for biographical fact

Einstein received the Nobel Prize in Physics in 1921 for his explanation of the photoelectric effect.

passive: received the Nobel Prize + for + [reason]

Common collocations
  • theory of relativity
  • Nobel Prize
  • general relativity
  • special relativity
  • Einstein's equation
  • photoelectric effect
  • thought experiment
  • E=mc²
Synonyms
  • scientist

    a general term for anyone who studies science; much broader than Einstein as a specific individual

  • physicist

    a scientist who specialises in physics; Einstein was one of the most famous physicists in history

  • genius

    informal term for an exceptionally intelligent person; sometimes used as a common noun derived from Einstein's name

Grammar Patterns

Einstein (as a proper name) — referring to the person

Usage Note

Always capitalised. Often used with a possessive form (Einstein's theory, Einstein's work). In informal English, 'einstein' (lowercase) can mean a very intelligent person, e.g. 'She's a real einstein when it comes to maths.' This dictionary entry covers the proper-noun sense only.

Common Mistakes

Einstein discovered the theory of relativity.
Einstein developed the theory of relativity.
He created the theory through years of research; it wasn't something he simply stumbled upon.
Einstein failed maths as a child.
Einstein was strong in maths from a young age.
The story that he failed maths is a myth; he excelled at mathematics early on.

Word family

  • Einsteinian
    adjectiveC1
  • einsteinium
    nounC2

Synonym discussion

Sense: noun/1

These words all relate to intellectual or scientific achievement but differ in scope. Scientist is the broadest term — it covers anyone working in any scientific field (biology, chemistry, physics, etc.). Physicist narrows the field to the study of matter, energy, and the physical world — Einstein's own profession. Genius describes someone with exceptional intellectual or creative ability, and is often used in informal praise ('My dad is a genius at fixing things'). Thinker is even broader, referring to anyone who thinks deeply about ideas, not limited to science. While Einstein was all four, these words are not synonyms for the man himself: 'He is a physicist' tells you his profession; 'He is an Einstein' (capitalised as a proper noun) names him specifically, while 'He is an einstein' (lowercase) uses his name as a playful label for a very smart person.

scientist ↗physicist ↗genius ↗thinker ↗

Common collocations

Nouns

Phrases

Prepositions

Etymology

GermanEnglish

The name 'Einstein' comes from German, from 'Einstein' meaning 'one stone' (ein 'one' + Stein 'stone'). Albert Einstein (1879–1955) was born in Ulm, Germany, later became a Swiss citizen, and then a US citizen after fleeing Nazi Germany in 1933. His name became so famous for intellectual achievement that it entered English as a common noun meaning 'a genius' — first recorded in this informal use in the 1940s.