Definition of pumice
: a volcanic glass full of cavities and very low in density that is used especially in powder form for smoothing and polishing
pumiceousplay \pyü-ˈmi-shəs, ˌpə-\ adjective
Recent Examples of pumice from the Web
But budget writers approved just $9 million for OSU to prep a pumice mine adjacent to the Bend campus for future growth.
The Romans also created a special type of volcanic pumice, called pozzalana.
At some places, like the cemetery, removal of the pumice was all done by hand with garden shovels.
Last year, Urbina had to modify the race route to avoid La Ruta’s usual grueling trip up and over the Irazú and Turrialba volcanoes, a path covered with ash and riddled with sharp pumice.
Islands of pumice floated on the oceans for months.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'pumice'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
PUMICE Defined for English Language Learners
Definition of pumice for English Language Learners
: a gray stone that comes from volcanoes, is full of small holes, has a very light weight, and is used especially for smoothing and polishing things or for softening the skin
PUMICE Defined for Kids
Definition of pumice for Students
: a very light porous volcanic glass that is used in powder form for smoothing and polishing
Medical Definition of pumice
: a volcanic glass full of cavities and very light in weight used especially in powder form for smoothing and polishing
Seen and Heard
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