therm
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therm
(thûrm)n.
1.
a. A unit of heat equal to 100,000 British thermal units (1.054 × 108 joules).
b. A unit of heat equal to 1,000 large calories.
2.
a. A unit of heat equal to the large calorie.
b. A unit of heat equal to the small calorie.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
therm
(θɜːm)n
(Units) Brit a unit of heat equal to 100 000 British thermal units. One therm is equal to 1.055 056 × 108 joules
[C19: from Greek thermē heat]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
therm
(θɜrm)n.
any of several units of heat, as one equivalent to 1000 large calories or 100,000 British thermal units.
[1885–90; < Greek thérmē heat]
therm-
var. of thermo- before a vowel: thermion.
-therm
var. of thermo- as a final element: ectotherm.
therm.
thermometer.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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| Noun | 1. | therm - a unit of heat equal to 100,000 British thermal units B.Th.U., British thermal unit, BTU - a unit of heat equal to the amount of heat required to raise one pound of water one degree Fahrenheit at one atmosphere pressure; equivalent to 251.997 calories |
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