projective geometry


Definition of projective geometry

: a branch of geometry that deals with the properties of configurations that are unaltered by projection

Examples of projective geometry in a Sentence

Recent Examples on the Web Nima Arkani-Hamed, a professor in the institute’s School of Natural Sciences, was talking about recent research that had brought him into contact with some beautiful, elementary, albeit ancient, results in projective geometry. Siobhan Roberts, New York Times, "Lunch With Freeman Dyson, in 196,883 Dimensions," 3 Mar. 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'projective geometry.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of projective geometry

1878, in the meaning defined above

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Time Traveler for projective geometry

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The first known use of projective geometry was in 1878

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Cite this Entry

“Projective geometry.” Dictionary, Merriam-Webster, Accessed 16 Apr. 2021.

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