Definition of wavelength in English:



  • 1Physics
    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’
    • ‘The most powerful telescopes in the world, spanning all wavelengths of the electromagnetic spectrum, were retooled and reprogrammed to observe the dying star.’
    • ‘Unfortunately, Earth's atmosphere blocks almost all wavelengths in the electromagnetic spectrum.’
    • ‘Visible light consists of a ‘rainbow’ or spectrum of electromagnetic waves of different wavelengths.’
    • ‘This is important because a long wavelength means that the sound wave can pass around barriers, like rocks, easily.’
    • ‘The wavelengths of the radio waves emitted by the pulsar are lengthened as a result of the effects of the gravitational field of the companion star (gravitational redshift).’
    1. 1.1A wavelength as a distinctive feature of radio waves from a transmitter.
      • ‘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.’
      • ‘The transmitter generates low FM signals, which have a long wavelength, considerably longer than the circuit board itself.’
      channel, broadcasting organization
      View synonyms
  • 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’
    • ‘‘We had a few laughs and found we were very much on the same wavelength,’ says Currie.’
    • ‘Generally you have to do what the director thinks and very rarely do you find a director who is on the same wavelength as you.’
    • ‘I think I'm on the same wavelength as many of them.’
    • ‘Convincing people with money to make the movie is difficult enough, but getting them on the same wavelength as the filmmaker is almost impossible.’
    • ‘Right from the word go, he was on the same wavelength as his young guest.’
    • ‘Maybe he should call a meeting with is chosen henchmen and discuss the plan, because they are not working on the same wavelength here.’
    • ‘In this the United States and Saudi Arabia, with its considerable oil revenues, were on the same wavelength.’
    • ‘You could go up to a stranger and know they were on the same wavelength.’
    • ‘When you're on the same wavelength, the two of you are unstoppable.’
    • ‘We are on the same wavelength and had a lot of fun over the first two days.’
    • ‘He is bursting with ideas and characters and energy and just wants to see if you are on the same wavelength.’
    • ‘‘Dave and Andy are much more on the same wavelength,’ he says.’
    • ‘Captain Ed and I are on the same wavelength!’
    • ‘Of course, sometimes we have arguments about things, but we're always on the same wavelength.’
    • ‘I think the President was on the same wavelength.’
    • ‘In many ways, this being on the same wavelength makes for easy and fluent conversation.’
    • ‘‘Most problems are a result of misunderstandings where partners are not operating on the same wavelength,’ said Barrie.’
    • ‘I've got a certain way of interviewing players to see if they are on the same wavelength.’
    • ‘But soon she found that she and Giles were pretty much on the same wavelength.’
    • ‘He didn't seem to be on the same wavelength as we were, or anyone else in the pub for that matter.’