polar front


: the boundary between the cold air of a polar region and the warmer air of lower latitudes

Examples of polar front in a Sentence

Recent Examples on the Web This sudden mid-air jolt is caused by wind shear created by the jet stream, specifically the polar front jet stream in northern latitudes. Darren Orf, Popular Mechanics, 5 Sep. 2023 The difference in temperatures across the planet—hot at the equator and cold at the poles—causes enormous low-pressure systems and polar fronts, resulting in seasonal windstorms. Joe Pappalardo, Popular Mechanics, 8 May 2023 Then a big change will be felt in the temperature department across the state as the combination of Nicole’s circulation and a polar front bring down much cooler air into the state starting on Friday and lasting into the weekend. Leigh Morgan, al, 9 Nov. 2022 And those anomalous years offer a preview of how the Southern Ocean is expected to warm in the coming decades, steadily shifting the polar front farther south. Eli Kintisch, Science | AAAS, 19 Mar. 2020 The polar front doesn’t stay in the same place every year. Eli Kintisch, Science | AAAS, 19 Mar. 2020 Adult penguins take turns to forage for food, traveling hundreds of miles to reach the Antarctic polar front—a nutrient-rich stretch of ocean where cold deep water meets warmer patches. Julissa Treviño, Smithsonian, 1 Mar. 2018 In addition to a reliable source of food like the Antarctic polar front, king penguins also need tolerable temperatures, islands with smooth beaches (not rocky ones) and relatively little ice, Hignett writes. Julissa Treviño, Smithsonian, 1 Mar. 2018

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'polar front.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1920, in the meaning defined above

Time Traveler
The first known use of polar front was in 1920

Dictionary Entries Near polar front

Cite this Entry

“Polar front.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/polar%20front. Accessed 22 Jun. 2024.

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