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  1. radiation

    • IPA[ˌrādēˈāSH(ə)n]

    美式

    • n.
      the emission of energy as electromagnetic waves or as moving subatomic particles, especially high-energy particles which cause ionization.;the energy transmitted by radiation, as heat, light, electricity, etc.
    • noun: radiation, plural noun: radiations

    • 釋義
    • 相關詞
    • n.
      名詞
    • 1. the emission of energy as electromagnetic waves or as moving subatomic particles, especially high-energy particles which cause ionization.
    • 2. the energy transmitted by radiation, as heat, light, electricity, etc.:

      background radiation

      the radiation dose

    • 3. divergence out from a central point, in particular evolution from an ancestral animal or plant group into a variety of new forms:

      evolution is a process of radiation not progression

    • n. treatment with or exposure to X-rays.

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    • n. the diversification of a group of organisms into forms filling different ecological niches.

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    • n. electromagnetic radiation emitted by particles moving through a medium at speeds greater than that of light in the same medium.

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    • n. electromagnetic radiation which, according to theory, should be emitted by a black hole. The radiation is due to the black hole capturing one of a particle-antiparticle pair created spontaneously near to the event horizon.

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    • n. radiation consisting of cosmic rays.

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    • n. ionizing radiation consisting of alpha particles, emitted by some substances undergoing radioactive decay.

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    • n. a kind of radiation including visible light, radio waves, gamma rays, and X-rays, in which electric and magnetic fields vary simultaneously.

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    • n. gamma rays.

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    • IPA[reɪdɪˈeɪʃ(ə)n]

    英式

    • n.
      the emission of energy as electromagnetic waves or as moving subatomic particles, especially high-energy particles which cause ionization.

    Powered by Oxford Dictionary of English 3e

  2. 知識+

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