IRRADIATION

n.

4 definitions — Webster’s Dictionary (1828)


1.
n.

Act of irradiating, or state of being irradiated.

2.
n.

Illumination; irradiance; brilliancy. Sir W. Scott.

3.
n.

Fig.: Mental light or illumination. Sir M. Hale.

4.
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.


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