Irradiation

[Ir*ra`di*a·tion]

(medicine) the treatment of disease (especially cancer) by exposure to a radioactive substance

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Act of irradiating, or state of being irradiated.

Noun
(medicine) the treatment of disease (especially cancer) by exposure to radiation from a radioactive substance

Noun
(Pavolvian conditioning) the elicitation of a conditioned response by stimulation similar but not identical to the original stimulus

Noun
the apparent enlargement of a bright object when viewed against a dark background

Noun
(physiology) the spread of sensory neural impulses in the cortex

Noun
a column of light (as from a beacon)

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Noun
the condition of being exposed to radiation


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.


Irradiation

Ir*ra`di*a"tion , n. [Cf. F. irradiation.] 1. Act of irradiating, or state of being irradiated. 2. Illumination; irradiance; brilliancy. Sir W. Scott. 3. Fig.: Mental light or illumination. Sir M. Hale. 4. (Opt.) 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.

Act of irradiating, or state of being irradiated.

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Usage Examples
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