1) Medical treatment 
• (n.) The treatment of disease by inhalations of compressed or rarefied air.
(noo″mo-ther´ә-pe) treatment of disease of the lungs.
Pneu`mo·ther'a·py noun [ Greek ... air + therapy .] (Medicine) The treatment of disease by inhalations of compressed or rarefied air. 
pneumotherapy, pneumaotherapy, pneumatotherapeutics Treatment of diseases, especially of the lungs, by inhalation of compressed or rarefied air. Word units related to breath and breathe: hal-; pneo-; pneumo-; psych-; spiro.