: a volcanic glass full of cavities and very low in density that is used especially in powder form for smoothing and polishing
Examples of pumice in a Sentence
Recent Examples on the Web
Historically, brands have used pumice stones to achieve a worn, stonewashed look — with stones often shipped from Mexico, adding transport emissions and cost to the process.
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ABC News, 28 May 2026
Gently rub the pumice stone over the surface of the soap scum, rinsing away any residue that collects on it.
—Karen Brewer Grossman, Southern Living, 22 May 2026
As previously reported, the eruption of Mount Vesuvius released thermal energy roughly equivalent to 100,000 times the atomic bombs dropped on Hiroshima and Nagasaki at the end of World War II, spewing molten rock, pumice, and hot ash over the cities of Pompeii and Herculaneum in particular.
—ArsTechnica, 18 May 2026
However, the report notes that pumice stone use is down two percent compared to last year.
—Angela Velasquez, Footwear News, 6 May 2026
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ABC News, 28 May 2026
Gently rub the pumice stone over the surface of the soap scum, rinsing away any residue that collects on it.
—Karen Brewer Grossman, Southern Living, 22 May 2026
As previously reported, the eruption of Mount Vesuvius released thermal energy roughly equivalent to 100,000 times the atomic bombs dropped on Hiroshima and Nagasaki at the end of World War II, spewing molten rock, pumice, and hot ash over the cities of Pompeii and Herculaneum in particular.
—ArsTechnica, 18 May 2026
However, the report notes that pumice stone use is down two percent compared to last year.
—Angela Velasquez, Footwear News, 6 May 2026
See All Example Sentences for pumice
Cite this Entry
“Pumice.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/pumice. Accessed 29 May. 2026.
Copy CitationKids Definition
pumice
noun
pum·ice
ˈpəm-əs 
: a very light glass that is formed by the rapid cooling of lava from volcanoes, is full of small holes, and is used especially in powder form for smoothing and polishing
Medical Definition
pumice
noun
pum·ice
ˈpəm-əs
: a volcanic glass full of cavities and very light in weight used especially in powder form for smoothing and polishing
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