n.
1.the condition of being exposed to radiation
2.a column of light (as from a beacon)
3.(physiology) the spread of sensory neural impulses in the cortex
4.the apparent enlargement of a bright object when viewed against a dark background
5.(Pavolvian conditioning) the elicitation of a conditioned response by stimulation similar but not identical to the original stimulus
6.(medicine) the treatment of disease (especially cancer) by exposure to radiation from a radioactive substance
Idiom of the Day
ground (someone)
to take away someone's privileges (usually used for teenagers)
The girl was grounded by her parents because she came home late too often.