- simple past tense and past participle of pumice
Variant of pumice
an extremely porous, glassy, extrusive igneous rock typically light enough to float on water, used as an abrasive and in making soaps, polishes, etc.
also pumice stone
Origin of pumiceMiddle English pomis ; from Old French ; from Classical Latin pumex ; from Indo-European base an unverified form (s)poimno-, foam