polar front

SEE SYNONYMS FOR polar front ON THESAURUS.COM

noun

Meteorology. the variable frontal zone of middle latitudes separating air masses of polar and tropical origin.

Origin of polar front

First recorded in 1915–20

Words nearby polar front

polar coordinate, polar coordinate system, polar coordinates, polar distance, polar equation, polar front, polar lights, polar molecule, polar nucleus, polar opposition, polar orbit

British Dictionary definitions for polar front

polar front

noun

meteorol a front dividing cold polar air from warmer temperate or tropical air

Scientific definitions for polar front

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.