cnoidal

Etymology
Coined by Korteweg and de Vries in their paper in Philosophical Magazine (1895, series 5, vol. 39, pp. 422-443) to describe a class of solutions to the KdV equation which involve a. The Jacobi elliptic function involved is commonly written as $$\mathrm{cn}(x|m)$$, and the term cnoidal was designed to be analogous to sinusoidal, the word describing waves which involve the sine function.

Adjective

 * 1)  Describes a travelling wave whose amplitude is constricted; e.g. a wave in shallow water.

Translations

 * French: cnoïdal
 * Italian:
 * Russian: кноида́льный