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pumice

American  
[puhm-is] / ˈpʌm ɪs /

noun

  1. Also called pumice stone.  a porous or spongy form of volcanic glass, used as an abrasive.


verb (used with object)

pumices, present (3rd person singular) pumiced, past participle, past pumicing present participle
  1. to rub, smooth, clean, etc., with pumice.

pumice British  
/ ˈpʌmɪs, pjuːˈmɪʃəs /

noun

  1. Also called: pumice stone.  a light porous acid volcanic rock having the composition of rhyolite, used for scouring and, in powdered form, as an abrasive and for polishing

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

verb

  1. (tr) to rub or polish with pumice

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
pumice Scientific  
/ pŭmĭs /
  1. A usually light-colored, porous, lightweight rock of volcanic origin. The pores form when water vapor and gases escape from the lava during its quick solidification into rock.


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Etymology

Origin of pumice

First recorded before 1000; from Latin pūmic-, stem of pūmex “pumice stone”; replacing Middle English pomis(e), pomish(e), pomice, from Middle French pomis, from Latin; compare Old English pumic- (from Latin ), in pumicstān “pumice stone”; see pounce 3

Compare meaning

How does pumice compare to similar and commonly confused words? Explore the most common comparisons:

Explanation

Pumice is a very light stone that comes from volcanic rock. Formed from lava, pumice is porous, or full of tiny holes. It may sound exotic, but you can buy one at the drug store and scrub your feet with it. The pumice found by a geologist or displayed in a museum exhibit about volcanoes is the same material as the pumice stones that you'd use to smooth the callouses off your feet. Pumice is also useful for "aging" denim (or making stone-washed jeans), and it's included in objects like pencil erasers and cinder blocks. The word comes from the Latin pumex, which shares a root with "foam."

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Vocabulary lists containing pumice

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

Finds included bone pegs for stretching vellum as it dried, and tools such as knives and pumice stones for scraping and smoothing animal hides.

From BBC Mar. 25, 2026

He died at Stabiae, a few miles south of Pompeii, gazing over a sea rendered unnavigable by pumice and strong opposing winds.

From The Wall Street Journal Jan. 2, 2026

They had also visited Pompeii, the ancient Italian city buried under volcanic ash and pumice when Mt.

From Los Angeles Times May 31, 2024

In addition to lava, volcanos eject large amounts of pumice, ashes and gases as a fast-moving flow, known as "pyroclastic flow," and its sediments are a valuable data source on past eruptions.

From Science Daily Feb. 22, 2024

Sheltering from pumice would’ve been an adventure, but it was survivable.

From "Mountain of Fire" by Rebecca E. F. Barone

The upper Piton is unfitted for retaining water, which must percolate through its cinders, pumices, and loose matter into many a reservoir formed by blowing-holes.

From To the Gold Coast for Gold A Personal Narrative in Two Volumes.—Volume I by Burton, Richard Francis, Sir

Donkeys usually keep their hooves naturally pumiced by foraging for long miles over rocky ground.

From New York Times Nov. 17, 2016

Her pumiced spear at the ready, Sosie crouched behind the bush to watch and wait.

From "Beauty Queens" by Libba Bray

For these reasons such feet are particularly liable to bruises of the sole, corns, pumiced sole, and excessive suppuration when the process is once established.

From Special Report on Diseases of the Horse by Michener, Charles B.

Wounds in well-shaped feet are less serious than in feet with soles that are flat or convex, or in which the horn is pumiced or otherwise deteriorated in quality.

From Diseases of the Horse's Foot by Reeks, Harry Caulton

The horse would be equally free from "drop" and "pumiced" sole, seedy toe, thrush, and kindred complaints.

From Rational Horse-Shoeing by Russell, John E.

I decided to ham it up, doing my best Michael Jackson moonwalk, pumicing my bare feet as I dragged them awkwardly across concrete.

From Salon Jun. 3, 2023

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