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pneumotherapeutics
pneumotherapeutics n.
Brit. 
/ˌnjuːmə(ʊ)θɛrəˈpjuːtɪks/
, /ˌnjuːmə(ʊ)θɛrəˈpjuːtɪks/U.S. /ˌn(j)umoʊˌθɛrəˈpjudɪks/
Medicine rare = pneumotherapy n./ˌn(j)umoʊˌθɛrəˈpjudɪks/ΚΠ
1910 Encycl. Brit. I. 270/2 Pneumotherapeutics, or the treatment of disease by artificially prepared atmospheres.
1954 Irish Jrnl. Med. Sci. 403 (title) Air embolism in pneumotherapeutics.
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