from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. a device used to measure small changes in radiant heat, or in temperature
from the GNU version of the Collaborative International Dictionary of English
- n. A very sensitive modification or application of the thermopile, used for indicating minute changes of radiant heat, or temperature.
from The Century Dictionary and Cyclopedia
- n. An instrument serving as a very delicate means of measuring small amounts of heat.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. radiometer that is extremely sensitive
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