boundary layer

noun

: a region of fluid (such as air) moving relative to a nearby surface (such as that of an airplane wing) that is slowed by the viscosity of the fluid and its adhesion to the surface

Examples of boundary layer in a Sentence

Recent Examples on the Web

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These results show that the chemical composition, density and structure of this boundary layer are sensitive and responsive on a much shorter time frame than previously imagined. —

Carly Miller, Forbes, 27 Sep. 2024 The 66-million-year-old Cretaceous-Paleogene (K-Pg) boundary layer at Stevns Klint in Denmark. —

Jennifer Ouellette, Ars Technica, 15 Aug. 2024 Ideally, the boundary layer should sit next to the skin, which helps to keep it smooth. —

The Physics Arxiv Blog, Discover Magazine, 26 Mar. 2024 According to the carmaker, plasma actuators use electric charges to adjust the boundary layer of air moving over a surface—in this case the rear end. —

Peter Lyon, Forbes, 13 Nov. 2023 See all Example Sentences for boundary layer

Word History

First Known Use

1921, in the meaning defined above

Time Traveler

The first known use of boundary layer was in 1921

See more words from the same year

Cite this Entry

Style

“Boundary layer.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/boundary%20layer. Accessed 14 Nov. 2024.

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