'Thermograph' definitions:

Definition of 'thermograph'

From: WordNet
noun
Medical instrument that uses an infrared camera to reveal temperature variations on the surface of the body
noun
A thermometer that records temperature variations on a graph as a function of time [syn: thermograph, thermometrograph]

Definition of 'Thermograph'

From: GCIDE
  • Thermograph \Ther"mo*graph\, n. [Thermo- + -graph.] (Physics) An instrument for automatically recording indications of the variation of temperature. [1913 Webster]