cold front

American  

[kohld fruhnt] / ˈkoʊld ˌfrʌnt /

noun

1. the zone separating two air masses, of which the cooler, denser mass is advancing and replacing the warmer.

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cold front British  

noun

1. the boundary line between a warm air mass and the cold air pushing it from beneath and behind as it moves

2. the line on the earth's surface where the cold front meets it

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cold front Scientific  

1. The forward edge of an advancing mass of cold air that pushes under a mass of warm air. Cold fronts often cause precipitation; water vapor in the rising warm air condenses and forms clouds, often resulting in heavy rain, thunderstorms, hail, or snow. Winter cold fronts can cause temperatures to drop significantly. Summer cold fronts reduce humidity as drier, cooler air displaces the humid, warmer air. On a weather map, a cold front is depicted as a blue line with triangles that point in the direction in which the cold air is moving.

2. Compare occluded front warm front See illustration at front

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Etymology

Origin of cold front

First recorded in 1920–25

Compare meaning

How does cold-front compare to similar and commonly confused words? Explore the most common comparisons:

• cold front vs. warm front

Example Sentences

Up to 80cm of snow has fallen in some parts of the country in the past 72 hours, data from the Japan Meteorological Agency shows, with more predicted to fall as a cold front persists.

From BBC

The cold front moving into the state from the northwest is expected to reach the Los Angeles area by Saturday and bring rain and high-elevation snow through Sunday.

From Los Angeles Times

No one wants to intentionally ruin Thanksgiving by serving up an undercooked bird, or by serving up a cold front to one’s guests.

From MarketWatch

The cold front will have moved away from Los Angeles, but the cold core of the low-pressure system will still be around.

From Los Angeles Times

By Tuesday, the cold front will have moved away from L.A., but the cold core of the low-pressure system will still be around.

From Los Angeles Times

Related Words

• cold snap
• cold spell
• cold wave