Entry 1 sense Webster, 1913 physiotherapy /(fĭz`ĭ*ō̇*thẽr"ȧ*py̆)/ · phys·i·o·ther·a·py · IPA /ˌfɪziəʊˈθerəpi/ 01 n. Therapy that uses physical agents: exercise and massage and so on. 1. Therapy that uses physical agents: exercise and massage and so on. Syn. physical therapy, physiatrics.