1 Physics the distance between successive crests of a wave, especially points in a sound wave or electromagnetic wave: [count noun]:a range of wavelengths [mass noun]:an increase in wavelength (Symbol: λ)
a wavelength as a distinctive feature of radio waves from a transmitter.
2a person’s ideas and way of thinking, especially as it affects their ability to communicate with others:when we met we hit it off immediately—we’re on the same wavelength
wavelength in other Oxford dictionaries
Definition of wavelength in the US English dictionary
