irradiation

Definition
(noun) the condition of being exposed to radiation Definition
(noun) a column of light (as from a beacon) Definition
(noun) (physiology) the spread of sensory neural impulses in the cortex Definition
(noun) the apparent enlargement of a bright object when viewed against a dark background Definition
(noun) (Pavolvian conditioning) the elicitation of a conditioned response by stimulation similar but not identical to the original stimulus Definition
(noun) (medicine) the treatment of disease (especially cancer) by exposure to a radioactive substance