wavelength

Etymology

wave +‎ length

Pronunciation

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

• Audio (US)

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Noun

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.