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
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Recent Examples of pumice from the Web
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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.
Origin and Etymology of pumice
Middle English pomis, from Anglo-French pomice, from Latin pumic-, pumex — more at foam
First Known Use: 15th century
PUMICE Defined for English Language Learners
pumice
playDefinition of pumice for English Language Learners
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: 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
pumice
playDefinition of pumice for Students
: a very light porous volcanic glass that is used in powder form for smoothing and polishing
Medical Dictionary
pumice
playMedical Definition of pumice
: a volcanic glass full of cavities and very light in weight used especially in powder form for smoothing and polishing
Learn More about pumice
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Spanish Central: Translation of pumice Nglish: Translation of pumice for Spanish speakers Britannica.com: Encyclopedia article about pumice
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