/ ˈθerəpi; NAmE / noun ( pl. -ies )
1.
[ U , C ] the treatment of a physical problem or an illness :
Most leukaemia patients undergo some sort of drug therapy (= treatment using drugs) .
alternative / complementary / natural therapies (= treatments that do not use traditional drugs)
2.
[ U ] = psychotherapy :
a therapy group
She's in therapy .
—see also chemotherapy , group therapy , hormone replacement therapy , occupational therapy , physiotherapy , radiotherapy , retail therapy , speech therapy
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WORD ORIGIN
mid 19th cent.: from modern Latin therapia , from Greek therapeia healing, from therapeuein minister to, treat medically.