- Also called pumice stone. a porous or spongy form of volcanic glass, used as an abrasive.
- to rub, smooth, clean, etc., with pumice.
Origin of pumice
Examples from the Web for pumice
They have all been at work like her, spouting ashes and pumice and rocks and lava.
And from that cloud showered these hot, pelting pebbles of pumice stone.
You know what this is in the case of a sponge, or pumice stone.Practical Mechanics for Boys
J. S. Zerbe
The world's principal source for pumice is the Lipari Islands, Italy.The Economic Aspect of Geology
C. K. Leith
Pumice stone might do it, but it would take your skin off, too.Marjorie's Busy Days
- 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
- (tr) to rub or polish with pumice
Word Origin and History for pumice
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.
- A light, porous, glassy lava, used as an abrasive.
- 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.