therm

The therm is a unit of measurement for heat. It is defined as 100,000 British thermal units (BTU). Heat itself is energy transferred between bodies due to a temperature difference. While heat is a form of energy, temperature is a measure of that energy within a body. The BTU is another unit of heat, historically defined as the heat needed to raise one pound of water by 1°F, though it's now standardized to approximately 1,055 joules or 252 gram calories. Gas companies often use the therm to measure gas consumption.123