Definition of "thermograph" []

• A thermometer that records the temperature it indicates. (noun)
• The apparatus used in diagnostic thermography. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Suddenly the quill on the thermograph began to vibrate."
• "Tom adjusted the thermograph potentiometer to zero deflection and checked the circuit once more."
• "The young inventor stared at the thermograph, his heart thumping wildly."