in heat

In a state of sexual excitement immediately preceding ovulation. For example, Our cat's in heat so we have to keep her inside. This expression applies to most female mammals and indicates the period when the animal is fertile and most receptive to mating. [Mid-1700s]

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Example Sentences

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Indeed, it looks something like a male dog in heat, but is the size and shape of an old-school satellite dish, sometimes reaching nine feet tall.

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Much of Southern California will continue to wake up to May gray weather, but as the marine layer fades later this week, warmer temperatures and a spike in heat are expected to hit the inland areas.

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“It’s not my favorite weather. I like running in heat, but you have to adapt.”

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Much of the UK basked in heat well above the average for the time of year, though conditions were cooler in Scotland and Northern Ireland.

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After a peak in heat on Thursday, temperatures will start to gradually fall over the bank holiday weekend to around average by Monday.

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