: the usually horizontal movement of a mass of fluid (such as air or an ocean current)
also : transport (as of pollutants or plankton) by such movement

Examples of advection in a Sentence

Recent Examples on the Web
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Cold air advection will continue through the day, keeping afternoon temperatures much lower than earlier this week. — Michael Autovino, CBS News, 15 Oct. 2026 Although numbers vary, between 300 and 400 ships have reportedly collapsed or capsized in the bay’s notorious advection fog. — Kevin Fisher-Paulson, San Francisco Chronicle, 7 Mar. 2023 The Dallas area typically sees advection and radiation fog, but there are exceptions in cases of extreme weather. — Dallas News, 3 Feb. 2023 See All Example Sentences for advection

Word History

Etymology

ad- + (con)vection

First Known Use

1910, in the meaning defined above

Time Traveler
The first known use of advection was in 1910

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Cite this Entry

“Advection.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/advection. Accessed 22 Oct. 2026.

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