noun
quantity of heat; calorific value
Technical term for the amount of heat energy, often measured in calories, joules, or BTU. Used in physics, engineering, and nutrition.
この食品の熱量は100グラムあたり350キロカロリーです。
The calorific value of this food is 350 kilocalories per 100 grams.
noun
Figurative extension: the intensity of someone's passion or enthusiasm, as if measuring emotional heat.
彼のスピーチには並々ならぬ熱量があった。
His speech had extraordinary passion.