THERMOGRAPH
thermograph, thermometrograph
(noun) a thermometer that records temperature variations on a graph as a function of time
thermograph
(noun) medical instrument that uses an infrared camera to reveal temperature variations on the surface of the body
Source: WordNet® 3.1
Etymology
Noun
thermograph (plural thermographs)
A thermometer which records the temperature.
Verb
thermograph (third-person singular simple present thermographs, present participle thermographing, simple past and past participle thermographed)
To record temperature using such an instrument
Source: Wiktionary
Ther"mo*graph, n. Etym: [Thermo- + -graph.] (Physics)
Definition: An instrument for automatically recording indications of the
variation of temperature.
Source: Webster’s Unabridged Dictionary 1913 Edition