heat - definition and synonyms


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  1. 1
    [singular/uncountable] the quality of being hot, or the degree to which something is hot

    These paints can withstand heat up to 200 degrees.

    The firefighters were driven back by the intense heat and smoke.

    heat of:

    He could feel the heat of the sun on his back.

    1. a.
      [only before noun] relating to heat

      the heat haze shimmering over the sands

    2. b.

      the heat

      very hot weather

      They were unable to work in the blistering heat.

      The local people get out of the city to escape the summer heat.

      the heat of the day (=the hottest part of the day):

      Only tourists were wandering about in the heat of the day.

    3. c.

      the heat

      the amount of heat produced by an oven or a heating system

      Bring the mixture to the boil; then reduce the heat.

      turn the heat up/down/on/off:

      I turned the heat down a little.

    4. d.

      the heat

      the place where the heat in an oven or on a hob comes from

      Take the pan off the heat.

  2. 2
    [uncountable] physics the energy that is produced when the temperature of something changes

    These chemical processes generate a lot of heat.

  3. 3
    [uncountable] the heating system in a building

    The cottage had no heat or water.

  4. 4
    [uncountable] strong and angry feelings

    He felt the heat of my glare.

    take the heat out of something:

    Professional counselling is one way of taking the heat out of getting a divorce.

  5. 5
    [countable] a game or race at the start of a competition. The winners of the heats then compete against each other at the next stage

    the second heat of the 800 metres

  6. 6

    the heat

    informal pressure and criticism intended to force someone to do what you want

    Many producers are beginning to feel the heat from their larger customers.

    put/keep the heat on (someone):

    We need to keep the heat on.