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Irradiation is a 11 letter word which starts with the letter I and ends with the letter N for which we found 4 definitions.

(n.) Act of irradiating or state of being irradiated.
(n.) Illumination; irradiance; brilliancy.
(n.) Fig.: Mental light or illumination.
(n.) 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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