radiation


Definition: Meaning of, radiation in English to English dictionary.

Pronunciation: / reɪdɪˈeɪʃ(ə)n /

  • noun
  • synonym
  • antonym
Word Forms:
Singular Plural
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[uncountable]
  1. a form of energy that comes especially from NUCLEAR reactions, which in large amounts is very harmful to living things
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  2. energy in the form of heat or light that is sent out as waves that you cannot see
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synonym
antonym

radiation used in phrases

  • Planck's radiation law (noun)
    1. physics an equation that expresses the distribution of energy in the radiated spectrum of an ideal black body
  • X-radiation (noun)
    1. electromagnetic radiation of short wavelength produced when high-speed electrons strike a solid target
    2. obtaining images by the use of X rays
  • acoustic radiation pressure (noun)
    1. acoustics the pressure exerted on a surface normal to the direction of propagation of a sound wave
  • actinic radiation (noun)
    1. electromagnetic radiation that can produce photochemical reactions
  • adaptive radiation (noun)
    1. the development of many different forms from an originally homogeneous group of organisms as they fill different ecological niches
  • alpha radiation (noun)
    1. the radiation of alpha particles during radioactive decay
  • background radiation (noun)
    1. radiation coming from sources other than those being observed
  • beta radiation (noun)
    1. radiation of beta particles during radioactive decay
  • blackbody radiation (noun)
    1. the electromagnetic radiation that would be radiated from an ideal black body; the distribution of energy in the radiated spectrum of a black body depends only on temperature and is determined by Planck's radiation law
  • corpuscular radiation (noun)
    1. e.g. neutrons e.g. beta particles e.g. alpha particles a stream of atomic or subatomic particles that may be charged positively or negatively or not at all
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