Definition of spherical trigonometry
: trigonometry applied to spherical triangles and polygons
Keep scrolling for more
Test Your Vocabulary
Who Knew?
-
- What is a ruelle?

Can you spell these 10 commonly misspelled words?
TAKE THE QUIZ
A daily challenge for crossword fanatics.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridged
Words at Play
Ask the Editors
Word Games
Share spherical trigonometry
Time Traveler for spherical trigonometry
The first known use of spherical trigonometry was circa 1728
See more words from the same year