energy expenditure


kil·o·cal·o·rie

(kcal) (kil'ō-kal'ŏr-ē) The quantity of energy required to raise the temperature of 1 kg of water from 14.5-15.5°C; it is 1000 times the value of the small calorie.
Synonym(s): kilogram calorie, large calorie.

cal·o·rie

(kal'ŏr-ē) A unit of heat content or energy. The amount of heat necessary to raise 1 g of water from 14.5-15.5°C (small calorie). Calorie is being replaced by joule, the SI unit equal to 0.239 calorie.
See also: British thermal unit[L. calor, heat]