Englishfor English speakers
chronic
Adjective
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If something is chronic, it happens all the time.
Michelle is a chronic worrier who gets upset about everything.
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If something is chronic, it has happened for a long time.
My father has chronic back pain since he was injured at work 5 years ago.
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If something is chronic, it is difficult to stop.
My brother is a chronic smoker and is unable to quit.
irradiation
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noun
the condition of being exposed to radiation
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noun
the apparent enlargement of a bright object when viewed against a dark background
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noun
(physiology) the spread of sensory neural impulses in the cortex
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noun
(Pavolvian conditioning) the elicitation of a conditioned response by stimulation similar but not identical to the original stimulus
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noun
(= radiotherapy)
(medicine) the treatment of disease (especially cancer) by exposure to a radioactive substance
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noun
(= beam)
a column of light (as from a beacon)