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non-euclidean

adjective, often capitalized E non-eu·clid·e·an \ ˌnän-yü-ˈkli-dē-ən \

Definition of non-euclidean

: not assuming or in accordance with all the postulates of Euclid's Elements
  • non-euclidean geometry

First Known Use of non-euclidean

1872

in the meaning defined above

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