1. the use of infrared radiation (as by infrared lamps or heating pads or hot water bottles) to relieve pain and increase circulation to a particular area of the body;
WordNet (r) 3.0 (2006):
infrared therapy
n 1: the use of infrared radiation (as by infrared lamps or
heating pads or hot water bottles) to relieve pain and
increase circulation to a particular area of the body