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1. (n.) irradiation
the act of irradiating or the state of being irradiated.
2. irradiation
a ray of light; beam.
3. irradiation
the use of x-rays or other forms of radiation for treatment of disease, manufacture of vitamin D, etc.
4. irradiation
exposure to x-rays or other radiation.
Etymology: (1585–95; < LL)
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| Definition of 'irradiation' |
Princeton's WordNet |
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1. (noun) irradiation
the condition of being exposed to radiation
2. (noun) beam, beam of light, light beam, ray, ray of light, shaft, shaft of light, irradiation
a column of light (as from a beacon)
3. (noun) irradiation
(physiology) the spread of sensory neural impulses in the cortex
4. (noun) irradiation
the apparent enlargement of a bright object when viewed against a dark background
5. (noun) irradiation
(Pavolvian conditioning) the elicitation of a conditioned response by stimulation similar but not identical to the original stimulus
6. (noun) radiotherapy, radiation therapy, radiation, actinotherapy, irradiation
(medicine) the treatment of disease (especially cancer) by exposure to a radioactive substance
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| Definition of 'irradiation' |
Webster Dictionary |
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1. (noun) irradiation
act of irradiating, or state of being irradiated
2. (noun) irradiation
illumination; irradiance; brilliancy
3. (noun) irradiation
fig.: Mental light or illumination
4. (noun) irradiation
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
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Definitions of irradiation 
