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
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 
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
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
Dictionary Entries Near boundary layer
Cite this Entry
“Boundary layer.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/boundary%20layer. Accessed 15 Dec. 2024.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
Share