: 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
The hair cleaning stone, like a generic pumice stone found in the plumbing aisle, is optimal for removing stubborn pet hair, the detailer added.
—
Krystal Nurse, USA Today, 22 Oct. 2025
All three will look at specific factors around space weather and auroras, including volcanic pumice and solar activity.
—Kenna Hughes-Castleberry, Space.com, 21 Oct. 2025
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, 28 Sep. 2025
Forgotten under sixty-five feet of pumice and ash, Herculaneum wasn’t rediscovered until the eighteenth century, and the original Villa dei Papiri has still not been fully excavated.
—Dana Goodyear, New Yorker, 22 Sep. 2025
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Krystal Nurse, USA Today, 22 Oct. 2025
All three will look at specific factors around space weather and auroras, including volcanic pumice and solar activity.
—Kenna Hughes-Castleberry, Space.com, 21 Oct. 2025
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, 28 Sep. 2025
Forgotten under sixty-five feet of pumice and ash, Herculaneum wasn’t rediscovered until the eighteenth century, and the original Villa dei Papiri has still not been fully excavated.
—Dana Goodyear, New Yorker, 22 Sep. 2025
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 Oct. 2025.
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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