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radiation medical definition
noun
- The act or condition of diverging in all directions from a center.
- The emission and propagation of energy in the form of rays or waves.
- The energy radiated or transmitted in the form of rays, waves, or particles.
- A stream of particles or electromagnetic waves that is emitted by the atoms and molecules of a radioactive substance as a result of nuclear decay.
- Radiotherapy.
- The radial arrangement of anatomical or histological parts.
- The spread of a group of organisms into new habitats.
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