Wavelength

Definition of wavelength in English:

noun

1

Physics The distance between successive crests of a wave, especially points in a sound waveor electromagnetic wave:

[COUNT NOUN]: a range of wavelengths[MASS NOUN]: an increase in wavelength(Symbol: λ)
1.1

A wavelength as a distinctive feature of radio waves from a transmitter.

2

A 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