Cnoidal

English

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 Template:W. The Jacobi elliptic function involved is commonly written as $\mathrm{c}\mathrm{n}(x|m)$, and the term cnoidal was designed to be analogous to sinusoidal, the word describing waves which involve the sine function.

Pronunciation

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Adjective

1. Template:Lb Describes a travelling wave whose amplitude is constricted; e.g. a wave in shallow water.

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