Definition of wavelength noun from the Oxford Advanced Learner's Dictionary


; ˈweɪvleŋθ
1 the distance between two similar points on a wave of energy, such as light or sound2 the size of a radio wave that is used by a particular radio station, etc. for sending signals or broadcasting programmes

be on the same wavelength


be on somebody's wavelength

(informal) to have the same way of thinking or the same ideas or feelings as somebody elseWe work together but we aren't really on the same wavelength.