波は数すうはすうFreq.FrequencyTop 100,000Meanings1nounwave number; wavenumberphysicsPhysics term: the number of waves per unit distance, often used in spectroscopy and wave mechanics.波は数すうは波は長ちょうの逆ぎゃく数すうに比ひ例れいする。The wave number is proportional to the reciprocal of the wavelength.