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View synonyms for polar front
polar front
noun
- Meteorology. the variable frontal zone of middle latitudes separating air masses of polar and tropical origin.
polar front
noun
- meteorol a front dividing cold polar air from warmer temperate or tropical air
polar front
- The region or boundary separating air masses of polar origin from those of tropical or subtropical origin. The position of the polar front during winter in a particular hemisphere is at approximately 30° latitude, while in the summer it is at approximately 60° latitude. The convergence of warm and cool air masses along the polar front often produces cyclonic wind systems.
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Word History and Origins
Origin of polar front1
First recorded in 1915–20
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