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ra·di·a·tion
n 1 : energy radiated in the form of waves or particles 2 a : the action or process of radiating <with of the pain there may be tenderness over the sciatic nerve -J. A. Key> b (1) : the process of emitting radiant energy in the form of waves or particles (2) : the combined processes of emission, transmission, and absorption of radiant energy 3 : a tract of nerve fibers within the brain : esp : one concerned with the distribution of impulses arising from sensory stimuli to the relevant coordinating centers and nuclei <the optic s> .
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Similar sounding terms: ro·ta·tion
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