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TAKE THE QUIZ“de Sitter”
The following 2 entries include the term de Sitter.
anti-de Sitter space
noun: the simplest hypothetical space-time that has negative curvature compare de sitter space
de Sitter space
noun: the simplest hypothetical space-time that has positive curvature compare anti-de sitter space
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Merriam-Webster unabridged
