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Einstein, Albert
     
Einstein, Albert
(1879-1955) a US physicist and mathematician, born in Germany, who developed the theory of relativity, which completely changed the way that scientists understand space and time. He was one of the greatest scientists ever born, and people sometimes use the name Einstein to talk about someone who is very intelligent:
• Go and ask Simon - he's the Einstein of the family.
• The controls are really easy to operate, so you don't have to be an Einstein to use it.
Definition from the Longman Dictionary of Contemporary English
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