noun
a boundary separating two masses of air of different densities, and is associated with stormy weather
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The cold front is expected to bring a drop in temperature and possibly some precipitation.
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I heard we're in for a cold front this weekend, so make sure to bundle up!
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Man, that cold front is gonna make it feel like we're in the arctic!
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The cold front of criticism from the boss left everyone feeling chilled to the bone.