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  1. Oxford American Dictionary

    spectrum

    • IPA[ˈspektrəm]

    美式

    • n.
      a band of colors, as seen in a rainbow, produced by separation of the components of light by their different degrees of refraction according to wavelength.；the entire range of wavelengths of electromagnetic radiation.

    • noun: spectrum, plural noun: spectra

    • 釋義
    • 片語

    名詞

    • 1. a band of colors, as seen in a rainbow, produced by separation of the components of light by their different degrees of refraction according to wavelength.
    • ▪ the entire range of wavelengths of electromagnetic radiation.
    • ▪ an image or distribution of components of any electromagnetic radiation arranged in a progressive series according to wavelength.
    • ▪ an image or distribution of components of sound, particles, etc., arranged according to such characteristics as frequency, charge, and energy.
    • 2. used to classify something, or suggest that it can be classified, in terms of its position on a scale between two extreme or opposite points the left or the right of the political spectrum
    • ▪ a wide range self-help books are covering a broader and broader spectrum

    片語