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

For tougher stains, use a pumice stone. —Karen Brewer Grossman, Southern Living, 13 Feb. 2026

The soil should contain coco coir or peat moss for moisture retention, pine bark fines or orchid bark to support root health, and perlite or pumice to help improve drainage and prevent compaction. —Rae Ford, Martha Stewart, 11 Feb. 2026

Use a loose, fast-draining potting mix that pairs nutritious soil with big pieces of orchid bark, pumice, or perlite. —Leanne Potts, Better Homes & Gardens, 20 Jan. 2026

Dryer skin can benefit from ingredients like coconut oil, shea butter, and glycerin, while activated charcoal and pumice are better suited for oily or acne-prone skin. —Olivia Rose Rushing, InStyle, 7 Jan. 2026

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