Irradiation

Definitions

1. An act of irradiating, or state of being irradiated.
   uncountable
2. a process of sterilization whereby radiation is passed through a bag containing food, utensils, etc., to sterilize the contents.
   uncountable
3. Synonym of radiotherapy.
   countable, uncountable
4. illumination; irradiance; brilliance.
   countable, obsolete, uncountable
5. mental light or illumination.
   countable, figuratively, obsolete, uncountable
6. 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.
   countable, obsolete, uncountable

Equivalents

CEFR level