warm front
noun Meteorology.
a transition zone between a mass of warm air and the colder air it is replacing.
Origin of warm front
First recorded in 1920–25
Words nearby warm front
warlock,
warlord,
warlpiri,
warm,
warm as toast,
warm front,
warm heart,
warm over,
warm sector,
warm spot,
warm spring
British Dictionary definitions for warm front
warm front
noun
meteorol
the boundary between a warm air mass and the cold air above which it is rising, at a less steep angle than at the cold front
Compare cold front, occluded front
Scientific definitions for warm front
warm front
The forward edge of an advancing mass of warm air that rises over and replaces a retreating mass of cooler air. As it rises, the warm air cools and the water vapor in it condenses, usually forming steady rain, sleet, or snow. On a weather map, a warm front is depicted as a red line with half circles whose curved sides point in the direction in which the warm air is moving. Compare cold front occluded front. See illustration at front.