Definition of wavelength in English:


Line breaks: wave|length
Pronunciation: /ˈweɪvlɛŋθ
, -lɛŋkθ/


  • 1 Physics The distance between successive crests of a wave, especially points in a sound wave or electromagnetic wave: [count noun]: a range of wavelengths [mass noun]: an increase in wavelength (Symbol: λ)
    More example sentences
    • Visible light consists of a ‘rainbow’ or spectrum of electromagnetic waves of different wavelengths.
    • Unfortunately, Earth's atmosphere blocks almost all wavelengths in the electromagnetic spectrum.
    • The most powerful telescopes in the world, spanning all wavelengths of the electromagnetic spectrum, were retooled and reprogrammed to observe the dying star.
  • 1.1A wavelength as a distinctive feature of radio waves from a transmitter.
    More example sentences
    • The transmitter generates low FM signals, which have a long wavelength, considerably longer than the circuit board itself.
    • The BBC had spread its music programming across its various wavelengths, but the late 1960s and the 1970s saw a movement for stations to be subject-specific.
  • 2A 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
    More example sentences
    • Captain Ed and I are on the same wavelength!
    • I think the President was on the same wavelength.
    • ‘Most problems are a result of misunderstandings where partners are not operating on the same wavelength,’ said Barrie.

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