irradiations

Noun

irradiation (countable and uncountable, plural irradiations)

1. (uncountable) a process of sterilization whereby radiation is passed through a bag containing food, utensils, etc., to sterilize the contents.
2. Synonym of radiotherapy.

   Synonyms:

   radiotherapy

3. (obsolete) illumination; irradiance; brilliance.
4. (figuratively, obsolete) mental light or illumination.
5. (obsolete) 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.