Definition

1. Noun:
   • The leading edge of an advancing mass of colder air: A "cold front" is a meteorological boundary that separates an advancing mass of cold, dense air from a body of warmer air it is displacing. It is often associated with specific weather changes.

Usage

• A "cold front" is used to describe a specific weather feature on maps and in forecasts. It is a standard term in meteorology.
• It is typically followed by a drop in temperature, shifts in wind direction, and often precipitation such as rain or thunderstorms along the frontal boundary.

Examples

• Noun:
  • The weather forecast predicts a cold front will move through the region tonight, bringing cooler temperatures.
  • A strong cold front is responsible for the severe thunderstorms we experienced yesterday.
  • On the weather map, the cold front is depicted as a blue line with triangles.

Advanced Usage

• "Behind the cold front": Refers to the area or conditions in the colder air mass that has moved in after the front has passed.
  • Behind the cold front, skies will clear and temperatures will be much lower.
• "The passage of a cold front": Describes the event of the front moving over a location.
  • The passage of a cold front caused winds to shift from south to northwest.

Variants and Related Words

• Front (n): In meteorology, any boundary separating two air masses of different densities (e.g., warm front, stationary front, occluded front).
• Cold air mass (n): A large body of air with relatively uniform cold temperature.
• Frontal boundary (n): Another term for the interface or transition zone between two air masses.

Synonyms

• Cold-air boundary: A less common synonym emphasizing the dividing line.
• Polar front: A specific type of cold front associated with the boundary between polar and mid-latitude air masses, though this is a more technical and specific term.

Related Phrases

• Cold frontogenesis: The meteorological process of cold front formation or intensification.
• Pre-frontal squall line: A line of severe thunderstorms that can develop ahead of an advancing cold front.

Noun

1. the front of an advancing mass of colder air