Meaning

• Thermal energy.

  "This furnace puts out 5000 BTUs of heat.   That engine is really throwing off some heat.   Removal of heat from the liquid caused it to turn into a solid."

• The condition or quality of being hot.

  "Stay out of the heat of the sun!"

• An attribute of a spice that causes a burning sensation in the mouth.

  "The chili sauce gave the dish heat."

• A period of intensity, particularly of emotion.

  "It's easy to make bad decisions in the heat of the moment."

• An undesirable amount of attention.

  "The heat from her family after her DUI arrest was unbearable."

• The police.

  "The heat! Scram!"

• One or more firearms.

• A fastball.

  "The catcher called for the heat, high and tight."

• A condition where a mammal is aroused sexually or where it is especially fertile and therefore eager to mate.

  "The male canines were attracted by the female in heat."

• A preliminary race, used to determine the participants in a final race

  "The runner had high hopes, but was out of contention after the first heat."

• One cycle of bringing metal to maximum temperature and working it until it is too cool to work further.

  "I can make a scroll like that in a single heat."

• A hot spell.

  "The children stayed indoors during this year's summer heat."

• Heating system; a system that raises the temperature of a room or building.

  "I'm freezing; could you turn on the heat?"

• The output of a heating system.

  "During the power outage we had no heat because the controls are electric.   Older folks like more heat than the young."

• In omegaverse fiction, a cyclical period in which alphas and omegas experience an intense, sometimes irresistible biological urge to mate.