noun Also called pumice stone. a porous or spongy form of volcanic glass, used as an abrasive. verb (used with object), pum·iced, pum·ic·ing. to rub, smooth, clean, etc., with pumice. RELATED WORDS scrub
sandpaper Origin of pumice before 1000;
pumice stone; replacing
Middle English pomis(e
Middle French pomis
Old English pumic-
(< L), in
pumice stone; see
pounce 3 Related forms pu·mi·ceous , [pyoo- mish- uh s] /pyuˈmɪʃ əs/ adjective pum·ic·er, noun
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for pumice
The stones which followed were by the flames converted to
pumice, and some of these were larger than an ox.
The world's principal source for
pumice is the Lipari Islands, Italy.
After five hours of hard climbing, we come to a ridge covered with sand and
Trees and herbage were overwhelmed with
pumice and volcanic dust. British Dictionary definitions for pumice noun 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 verb (tr) to rub or polish with pumice Derived Forms pumiceous ( pjuːˈmɪʃəs), adjective Word Origin for pumice
pomys, from Old French pomis, from Latin pūmex
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Word Origin and History for pumice n.
c.1400, from Anglo-French and Old French
pomis (13c.), from Late Latin pomicem (nominative pomex, genitive pumicis), from Oscan *poimex or some other dialectal variant of Latin pumex "pumice," from PIE *(s)poi-mo-, a root with connotations of "foam, froth" (see foam (n.)). Old English had pumic-stan. As a verb, early 15c., from the noun.
Online Etymology Dictionary, © 2010 Douglas Harper
Medicine definitions for pumice n. A light, porous, glassy lava, used as an abrasive.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Science definitions for pumice 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.
The American Heritage® Science Dictionary
Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.