radiation
Pronunciation: rā′dē-ā′shŭn- The act or condition of diverging in all directions from a center.
- The sending forth of light, short radio waves, ultraviolet rays or x-rays, or any other rays for treatment, diagnosis, or another purpose.
- A ray.
- Radiant energy or a radiant beam.
Synonym(s): radiatio
[L. radiatio, fr. radius, ray, beam]
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