English Noun (US) physical therapy (countable and uncountable, plural physical therapies) (countable and uncountable) Any of various therapeutic exercises and other activities to treat injury or dysfunction, or such exercises and activities collectively. (uncountable) The medical discipline dealing with such. Synonyms (British) (both senses): physiotherapy Translations therapy of exercises and activities to treat injury or dysfunction — see physiotherapyWikiwand - on Seamless Wikipedia browsing. On steroids.