wavenumber

Noun

 * 1)  A measure of the number of waves in unit distance; inversely proportional to its wavelength.

Translations

 * Estonian:
 * Finnish: aaltoluku
 * Hebrew: מִסְפַּר גַּל
 * Italian: numero d'onda
 * Luxembourgish: Wellenzuel
 * Romanian: număr de undă
 * Swedish: