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[thur-muh-pahyl] /ˈθɜr məˌpaɪl/
noun, Physics.
a device consisting of a number of thermocouples joined in series, used for generating thermoelectric current or for detecting and measuring radiant energy, as from a star.
Origin of thermopile
1840-50; thermo- + pile1 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for thermopile
  • Each well is surrounded by a multi-junction thermopile which monitors the temperature difference between the well and the block.
  • thermopile linearity was tested in air by comparison to a silicon photodiode.
  • After exiting the silicon waveguide on the flat edge, the spectrum is detected by a linear array of thermopile infrared detectors.
  • The one near the thermopile can be used to temperature correct a direct reading from the thermopile.
  • Most of this error is attributed to the thermopile cooling to space.
British Dictionary definitions for thermopile


an instrument for detecting and measuring heat radiation or for generating a thermoelectric current. It consists of a number of thermocouple junctions, usually joined together in series
Word Origin
C19: from thermo- + pile1 (in the sense: voltaic pile)
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
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thermopile in Science
A device consisting of a number of thermocouples connected in series or parallel, used for measuring temperature or generating current.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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