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more about irradiation
irradiation |
2 definitions found From Webster's Revised Unabridged Dictionary (1913) [web1913]: Irradiation \Ir*ra`di*a"tion\, n. [Cf. F. irradiation.] 1. Act of irradiating, or state of being irradiated. 2. Illumination; irradiance; brilliancy. --Sir W. Scott. 3. Fig.: Mental light or illumination. --Sir M. Hale. 4. (Opt.) The apparent enlargement of a bright object seen upon a dark ground, due to the fact that the portions of the retina around the image are stimulated by the intense light; as when a dark spot on a white ground appears smaller, or a white spot on a dark ground larger, than it really is esp. when a little out of focus. From WordNet r 1.6 [wn]: irradiation n : the treatment of disease (especially cancer) by exposure to radiation [syn: {radiotherapy}, {radiation therapy}, {actinotherapy}]
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