What is "thermometrograph"

Thermometrograph \Ther`mo*met"ro*graph\, n. [Thermo- + Gr. ? measure + -graph.] (Physics) An instrument for recording graphically the variations of temperature, or the indications of a thermometer.

n. A device that plots on a graph the measurements of a temperature over time.

n. a thermometer that records temperature variations on a graph as a function of time [syn: thermograph]