三焦 Traditional form: 三焦 Pinyin (reading): sānjiāo Definitions: (TCM) the three truncal cavities (thoracic, abdominal and pelvic), known as the "triple heater" or "San Jiao" Characters: 三 - three 焦 - burned, scorched; anxious, vexed Traditional characters: 三 - three 焦 - burned, scorched; anxious, vexed