What is "thermotherapy"

Thermotherapy \Ther`mo*ther"a*py\, n. [Thermo- + therapy.] (Med.) Treatment of disease by heat, esp. by hot air.

n. (context medicine English) The use of heat to treat disease

n. the use of heat to treat a disease or disorder; heating pads or hot compresses or hot-water bottles are used to promote circulation in peripheral vascular disease or to relax tense muscles