a thermometer that records the temperatures it measures.
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How to use thermograph in a sentence
In 1894, along with journalist and pioneering meteorologist William Eddy, the scientists strapped a thermograph to a wooden board and used a kite to keep it aloft for over four hours, flying as high as 1,400 feet.
The bag was raised to the top of a six-foot snow mound, a thermograph being placed alongside.The Home of the Blizzard | Douglas Mawson
The general care of the barograph is the same as that of the thermograph.Practical Exercises in Elementary Meteorology | Robert DeCourcy Ward
The other thermograph had evidently been constructed with a view to the tropics; at any rate, it would not go in the cold.
This was particularly annoying, because this thermograph had been working so well in low temperatures.
Well, it was an old meat-tin circulating inside the thermograph case.
British Dictionary definitions for thermograph
a type of thermometer that produces a continuous record of a fluctuating temperature
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012