English
aerotherapy
From aero- + therapy.
Proto-Indo-European *h₂ews- ‘dawn’
Proto-Indo-European *h₂ewsér ‘in the direction of dawn, east’
Proto-Hellenic *auhḗr ‘morning mist’
Ancient Greek ἀήρ ‘air’
Ancient Greek ἀέρος
English aero-
Ancient Greek θεράπων ‘attendant, aide’
Ancient Greek θεραπεύω ‘to serve, treat medically’
Ancient Greek θεραπεία ‘service, medical treatment’
New Latin therapīa ‘therapy’
English therapy
Today it means
noun Any therapy that uses some form of air
Language periods are conventional ranges, not dates for this word.
Etymograph / aerotherapy