1
: the smallest of three dimensions
length, width, and thickness
2
: the quality or state of being thick
3
a
: viscous consistency
boiled to the thickness of honey
b
: the condition of being smoky, foul, or foggy
4
: the thick part of something
5
Examples of thickness in a Sentence
The plank measures two inches in thickness.
the length, circumference, and thickness of the log
Plywood is available in various thicknesses.
Cooking time will vary depending on the thickness of the steak.
I added flour to increase the gravy's thickness.
I was surprised by the thickness of his accent.
Recent Examples on the Web
The high-pressure ridge will build in thickness along the South Bay on Tuesday, and areas near San Jose are expected to top out at 87 degrees.
—
Rick Hurd, Mercury News, 26 Mar. 2025
This material is often a higher-end plastic that focuses on thickness and rigidity while having a more textured top when compared to ABS.
—Henri Robbins, WIRED, 24 Mar. 2025
This is below the minimum thickness of 9mm specified under Article 3.5.9 of the Technical Regulations.
—Yara Elshebiny, Forbes, 23 Mar. 2025
As mineralization occurs, calcium and other essential minerals fill in this scaffolding, supporting bone density and thickness.
—Caroline C. Boyle, USA TODAY, 22 Mar. 2025
See All Example Sentences for thickness
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Rick Hurd, Mercury News, 26 Mar. 2025
This material is often a higher-end plastic that focuses on thickness and rigidity while having a more textured top when compared to ABS.
—Henri Robbins, WIRED, 24 Mar. 2025
This is below the minimum thickness of 9mm specified under Article 3.5.9 of the Technical Regulations.
—Yara Elshebiny, Forbes, 23 Mar. 2025
As mineralization occurs, calcium and other essential minerals fill in this scaffolding, supporting bone density and thickness.
—Caroline C. Boyle, USA TODAY, 22 Mar. 2025
See All Example Sentences for thickness
Cite this Entry
“Thickness.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/thickness. Accessed 29 Mar. 2025.
Copy CitationKids Definition
thickness
noun
thick·ness
ˈthik-nəs 
1
: the quality or state of being thick
2
: the smallest of three dimensions
length, width, and thickness
3
: the thick part of something
4
: layer entry 1 sense 2
a single thickness of canvas
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