vulcanotherapy, volcanotherapy Treatment with hot-sulfur springs or other hot-mineral spring water either by bathing in it and/or by drinking it. Related 'fire, burn, glow' words: ars-, ard-; caust-, caut-; crema-; flagr-; flam-; gehenna-; ign-; phlego-, phleg-; phlogo-, phlog-; pyro-, pyr-.