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2017 Word of the Year

cosmological constant

noun, Astronomy.
1.
a term introduced by Einstein into his field equations of general relativity to permit a stationary, nonexpanding universe: it has since been abandoned in most models of the universe.
Compare Einstein model.
Origin of cosmological constant
1925-1930
First recorded in 1925-30
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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