Word Meaning

irradiation definition and meaning

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.