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spherical geometry

American

noun

the branch of geometry that deals with figures on spherical surfaces.

spherical geometry British

noun

the branch of geometry concerned with the properties of figures formed on the surface of a sphere

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

spherical geometry Scientific

The geometry of circles, angles, and figures on the surface of a sphere.

Etymology

Origin of spherical geometry

First recorded in 1720–30

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023