spherical trigonometry

noun

: trigonometry applied to spherical triangles and polygons

Word History

First Known Use

circa 1728, in the meaning defined above

Time Traveler
The first known use of spherical trigonometry was circa 1728

Rhymes for spherical trigonometry

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Browse Nearby Words

spherical triangle
spherical trigonometry
spherical vault
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Cite this Entry

“Spherical trigonometry.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/spherical%20trigonometry. Accessed 11 Jul. 2025.

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More from Merriam-Webster on spherical trigonometry

Britannica.com: Encyclopedia article about spherical trigonometry

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