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Consult Chambers 21st Century Dictionary, The Chambers Thesaurus (1996) or Chambers Biographical Dictionary (1997 edition with amendments). Enter your search and choose your title from the drop-down menu.

Search results for 'radiation':

radiation noun 1 energy (usually electromagnetic radiation, eg radio waves, microwaves, infrared, visible light, ultraviolet, X-rays) that is emitted from a source and travels in the form of waves or particles (photons) through a medium, eg air or a vacuum. 2 a stream of particles, eg alpha particles, beta particles, electrons, neutrons, etc, emitted by a radioactive substance. 3 the act or process of radiating.