What does the word radiation mean?
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Emission or propagation of electromagnetic energy ( waves/ rays), or the waves/ rays themselves; a stream of electromagnetic particles ( electrons, neutrons, protons, alpha particles) or a mixture of these. The most common source is the sun.
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[ Latin] The act of radiating or spreading in all directions from a single point; as R. of light.
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[ Latin] In cerebral anatomy, a special group of fibres running from the basal portions of the brain to the cortex; a special portion of the corona radiate; as Pyramidal r., Optic r., Tegmental r.
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Usage examples for radiation
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I have sent to the Philosophical Magazine a paper in which I think it is shown that when the radiation by the atmosphere is taken into account the results are entirely changed. – Is Mars Habitable? by Alfred Russel Wallace
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He didn't get much of the radiation, but his heart wouldn't stand it, and gave out. – The Colors of Space by Marion Zimmer Bradley
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