spherical geometry

noun

: the geometry of figures on a sphere

Word History

First Known Use

1728, in the meaning defined above

Time Traveler

The first known use of spherical geometry was in 1728

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“Spherical geometry.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/spherical%20geometry. Accessed 1 Jul. 2026.

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spherical geometry

noun

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