irradiation

Meaning

Noun

• 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.
• a process of sterilisation whereby radiation is passed through a bag containing food, utensils, etc., to sterilise the contents.

Origin

• From Middle French irradiacion, from Latin irradiatio
• Morphologically irradiate + -ion