non-Euclidean C2 Topic:Mathematics & Measurement US /ˌnɑn juˈklɪdiən/ UK /ˌnɒn juˈklɪdiən/ See IPA manual Meanings 1 adj not based on Euclidean geometry, especially geometry in which Euclid's parallel postulate does not hold Relativity uses non-Euclidean geometry to describe curved spacetime. Thesaurus Synonyms 1 adj · not based on euclidean... non-Euclidean ↔ Opposites Euclidean Word family Forms non-Euclideans Related forms geometryeuclidean Etymology From non- + Euclidean, after the ancient geometer Euclid. Topics Mathematics & Measurement External links Cambridge Dictionary Wiktionary Google Images # non-Euclidean **Type:** Word **Level:** C2 **Part of speech:** adj **IPA (US):** /ˌnɑn juˈklɪdiən/ **IPA (UK):** /ˌnɒn juˈklɪdiən/ ## Meanings 1. not based on Euclidean geometry, especially geometry in which Euclid's parallel postulate does not hold ## Examples - Relativity uses non-Euclidean geometry to describe curved spacetime. ## Synonyms - non-Euclidean ## Antonyms - Euclidean ## Related Forms - geometry - euclidean ## Etymology From non- + Euclidean, after the ancient geometer Euclid. ## Topics - Mathematics & Measurement markdown