pumice

noun

pum·​ice ˈpə-məs 

: a volcanic glass full of cavities and very low in density that is used especially in powder form for smoothing and polishing

pumiceous

pyü-ˈmi-shəs 

ˌpə-

adjective

Examples of pumice in a Sentence

Recent Examples on the Web

Other materials such as tephra, or hot glassy volcanic fragments, as well as volcanic ash, pumice, scoria and reticulite can fall on the ground within 1 to 3 miles of the eruptive vents. —ABC News, 7 Nov. 2025

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

Word History

Etymology

Middle English pomis, from Anglo-French pomice, from Latin pumic-, pumex — more at foam

First Known Use

15th century, in the meaning defined above

Rhymes for pumice

• lummis
• squamous
• strumous

Kids 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