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thermo-hydrology
thermo-hydrology n.
Brit. 
/ˌθəːmə(ʊ)hʌɪˈdrɒlədʒi/
, /ˌθəːmə(ʊ)hʌɪˈdrɒlədʒi/U.S. /ˌθərmoʊˌhaɪˈdrɑlədʒi/
the scientific study of thermal waters./ˌθərmoʊˌhaɪˈdrɑlədʒi/ΚΠ
1881 Peale in 12th Rep. U.S. Geol. & Geog. Surv. II. (1883) 355 Thermo-hydrology.
1884 Athenæum 16 Aug. 211/2 The chapters on ‘Thermo-hydrology’ give evidences of a thoroughly scientific observer.
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