irradiation
noun
- process by which an object is exposed to radiation
Wiktionary
Pronunciation: /ɪˌɹeɪdiˈeɪʃən/
noun
Etymology: From Middle French irradiacion, from Latin irradiatio. Morphologically irradiate + -ion.
- An act of irradiating, or state of being irradiated.
- An act of irradiating, or state of being irradiated.
- illumination; irradiance; brilliance.
- mental light or illumination.
- 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, especially when a little out of focus.