Bessel function


Bes·​sel function ˈbe-səl- How to pronounce Bessel function (audio)
: one of a class of transcendental functions expressible as infinite series and occurring in the solution of the differential equation {latex}x^{2}\frac{d^{2}y}{dx^{2}} + x\frac{dy}{dx} = (n^2 - x^2)y{/latex}

Word History


Friedrich W. Bessel †1846 Prussian astronomer

First Known Use

1862, in the meaning defined above

Time Traveler
The first known use of Bessel function was in 1862

Dictionary Entries Near Bessel function

Cite this Entry

“Bessel function.” Dictionary, Merriam-Webster, Accessed 22 Feb. 2024.

More from Merriam-Webster on Bessel function

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!