Heat as a technical term in classical thermodynamics refers to thermal energy in transfer between systems with different temperatures.

Heat or HEAT may also refer to:


People with the nameEdit


Biology, climate, and environmentEdit

  • Heat, bodily energy measured in calories
  • Heat, environmental warmth, which may manifest as a heat wave
  • "Heat", an informal term for the estrus stage (a period of increased sexual drive) in the estrous cycle of mammals
  • HEAT repeat domain, a solenoid protein domain found in a number of cytoplasmic proteins
  • Heat vs. cold, the sensation of temperatures above and below body temperature in Thermoception


  • Fever, also known as pyrexia and febrile response, is defined as having a body temperature above the normal range in response to internal physiological conditions, such as an infection
  • Heat illness or heat-related illness, a spectrum of mild to severe acute medical problems caused by environmental exposure to heat:
    • Heat cramps, muscle spams resulting from loss of water and electrolytes through sweating, especially after heavy exercise or labor in high heat; may presage heat tetany and heat exhaustion (thus also heat stroke)
    • Heat edema, swelling of the hands and/or feet due to over-expansion of the blood vessels in the extremities in response to heat
    • Heat exhaustion, caused by the loss of water and electrolytes through sweating; may presage heat stroke
    • Heat rash (miliaria), skin irritations caused by excessive sweating or blocked sweat glands
    • Heat stroke, also known as sun stroke, defined as hyperthermia with a body temperature greater than 40.6 °C (105.1 °F) because of environmental heat exposure; potentially fatal
    • Heat syncope, fainting or dizziness as a result of overheating
    • Heat tetany, craps and even seizures caused by calcium and/or magnesium loss due to excessive sweating in short periods of stress in high heat
  • Hot flash (or hot flush), a feeling of heat, with sweating and increased heart rate, usually experienced by menopausal women due to low estradiol, though sometimes by men and by young women for other reasons, such as low testosterone or pituitary problems
  • Hyperthermia is elevated body temperature due to failed thermoregulation that occurs when a body produces or absorbs more heat than it dissipates.
    • Malignant hyperthermia (MH) is a type of severe reaction that may occur to susceptible patients during general anesthesia

Physics and astronomyEdit

Arts, entertainment, and mediaEdit

Fictional charactersEdit


  • Heat (1972 film), an American drama film directed by Paul Morrissey, starring Sylvia Miles and Joe Dallesandro
  • Heat (1986 film), an American action-thriller film directed by Dick Richards and Jerry Jameson, starring Burt Reynolds
  • Heat (1995 film), an American crime drama directed by Michael Mann, starring Al Pacino, Robert De Niro and Val Kilmer
  • Heat (1996 film), an Australian television film directed by Scott Hartford-Davis
  • Heat (2006 film), a Russian comedy film directed Rezo Gigineishvili
  • The Heat (film), a 2013 comedy film directed by Paul Feig, starring Sandra Bullock and Melissa McCarthy



Groups and labelsEdit





Television channel, series, and episodesEdit

Other uses in arts, entertainment, and mediaEdit


  • "Heat" or "hotness", more properly pungency or piquantness, the spiciness of foods such as black pepper, chili peppers, garlic and onions, ginger, mustard, and horseradish
  • Heat, the traditional and most common means of cooking food
  • Heat, applied post-preparation to food with a heat lamp, to prevent the growth of microorganisms before the food is consumed

Military, law enforcement, and crimeEdit


  • HEAT (software), a help desk software package by FrontRange Solutions
  • OpenStack Heat, the orchestration component of the OpenStack infrastructure-as-a-service software platform


Professional wrestlingEdit


Other uses in sportsEdit

  • Heat, a preliminary race or match in a sports tournament
  • Heat, in baseball, a colloquialism for a fastball

Other usesEdit

  • Heat (perfume), or Beyoncé Heat, a women's cologne endorsed by singer Beyoncé Knowles
  • Heat, in metallurgy, one batch of molten metal processed in a converter or open hearth furnace

See alsoEdit