wavelength
//ˈweɪv.lɛŋθ//
Noun
wavelengthSingular
wavelengthsPlural
1
The distance between successive crests or troughs of a wave, especially in electromagnetic radiation or sound.
Visible light has a wavelength between 400 and 700 nanometers.
2
A person's way of thinking, especially when it is shared with or understood by another person.
We're on the same wavelength when it comes to music.