definition of
irradiation

[1] #1 irradiation n. the condition of being exposed to radiation. wn

[2] #2 irradiation n. [beam, beam of light, light beam, ray, ray of light, shaft, shaft of light] a column of light (as from a beacon). wn

[3] #3 irradiation n. (physiology) the spread of sensory neural impulses in the cortex. wn

[4] #4 irradiation n. the apparent enlargement of a bright object when viewed against a dark background. wn

[5] #5 irradiation n. (Pavolvian conditioning) the elicitation of a conditioned response by stimulation similar but not identical to the original stimulus. wn