warm front

[ wawrm fruhnt ]

noun

, Meteorology.

1. a transition zone between a mass of warm air and the colder air it is replacing.

warm front

noun

1. 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

warm front

1. 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.
2. Compare cold frontSee illustration at front

Word History and Origins

Origin of warm front¹

First recorded in 1920–25

Example Sentences

Jumbles lies curled upon the warm front doorstep; Dimbie lies asleep in a low hammock chair.

From Project Gutenberg