from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A device consisting of a number of thermocouples connected in series or parallel, used for measuring temperature or generating current.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. An electronic device that converts thermal energy into electrical energy. Usually constructed using a series-combination of thermocouples.
from the GNU version of the Collaborative International Dictionary of English
- n. An instrument of extreme sensibility, used to determine slight differences and degrees of heat. It is composed of alternate bars of antimony and bismuth, or any two metals having different capacities for the conduction of heat, connected with an astatic galvanometer, which is very sensibly affected by the electric current induced in the system of bars when exposed even to the feeblest degrees of heat.
from The Century Dictionary and Cyclopedia
- n. A thermo-electric battery, especially as arranged for the measurement of small quantities of radiant heat. See thermo-electricity.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a kind of thermometer for measuring heat radiation; consists of several thermocouple junctions in series
A thermopile is a unit that is mounted so that it is in the pilot light flame.
"thermopile,"  succeeded in making the lunar heat sensible; and in
Tom had installed his invention on top of the great plane and also a highly sensitive thermopile to record any effect of solar radiation on the liquid oxygen.
It powers itself with a "micro thermopile" that turns heat from your hand into stored electricity that runs its internal clock and the heater.
That indicates to me that the unit probably has a thermopile generator on it to power the thermostat.
The damage to the thermopile has already been done.
Even Chow Winkler, the expedition's genial Texan cook, says, "Brand my thermopile, if the young inventor ain't plumb loco!"
So far as I know, this is the first application of the thermopile to variables.
This statement is, however, I think, quite within the truth, as to that almost unexplored region discovered by the elder Herschel, which, lying below the red and invisible to the eye, is so compressed by the prism that, though its aggregate heat effects have been studied through the thermopile, it is only by the recent researches of Capt.
In detecting the changes of variables, I have attempted to substitute, in place of the ordinary eye observations, a very delicate thermopile, which registers the changes in the star's heat.