from The American Heritage® Dictionary of the English Language, 4th Edition
- n. The calories or thermal units contained in one unit of a substance and released when the substance is burned.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The amount of heat produced by the complete combustion of a material or fuel. Measured in units of energy per amount of material, e.g. kJ/kg.
- n. The amount of energy available from an item of food when digested, mostly from carbohydrates and fats
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