wavelength

wave +‎ length

• (UK) IPA^(key): /ˈweɪvlɛŋ(k)θ/
• (US) IPA^(key): /ˈweɪvˌlɛŋ(k)θ/

• Audio (US)

  (file)

wavelength (plural wavelengths)

1. (physics) The length of a single cycle of a wave, as measured by the distance between one peak or trough of a wave and the next; it is often designated in physics as λ, and corresponds to the velocity of the wave divided by its frequency.

• two-wavelength
• three-wavelength

• on the same wavelength