Napier's analogies

plural noun

Na·​pi·​er's analogies

ˈnāpēə(r)z-

: four formulas giving the tangent of half the sum or difference of two of the angles or sides of a spherical triangle in terms of the others

Word History

Etymology

after John Napier

The Ultimate Dictionary Awaits

Expand your vocabulary and dive deeper into language with Merriam-Webster Unabridged.

1. Expanded definitions
2. Detailed etymologies
3. Advanced search tools
4. All ad-free

Discover what makes Merriam-Webster Unabridged the essential choice for true word lovers.

Start Your Free Trial Now