1. A change in direction of a photon or subatomic particle, as the result of a collision or interaction. 2. The secondary radiation resulting from the interaction of primary radiation with matter.
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scat·ter 'skat-ər vt to cause (a beam of radiation) to diffuse or disperse
scatter n
1) the act of scattering
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scat·ter (skatґər) the change in energy or momentum of radiation or particles (e.g., photons or x-rays) produced by interaction with the medium through which the rays or particles pass. See also backscatter.Medical dictionary. 2011.