from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun The quantity of heat required to raise the temperature of one pound of water from 60° to 61°F at a constant pressure of one atmosphere.
- noun The quantity of heat equal to 1/180 of the heat required to raise the temperature of one pound of water from 32° to 212°F at a constant pressure of one atmosphere.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun The
quantityof heatrequired to raisethe temperatureof one poundof waterone degree Fahrenheitat a particular temperature(there are several different precise definitions) and a pressureof one atmosphere.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun 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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