WAVELENGTH /ˈweɪvlɛŋ(k)θ/ ► audio Scrabble 20 Words With Friends 23 Definition noun the distance (measured in the direction of propagation) between two points in the same phase in consecutive cycles of a wave. noun a shared orientation leading to mutual understanding. See all 269 words you can make from WAVELENGTH → 10-letter words Words starting with W Words ending with H ← Unscramble different letters