pumiced


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pum·ice

 (pŭm′ĭs)
n.
A light, porous, glassy lava, used in solid form as an abrasive and in powdered form as a polish and an abrasive.
tr.v. pum·iced, pum·ic·ing, pum·ic·es
To clean, polish, or smooth with pumice.

[Middle English, from Anglo-Norman pomis, from Late Latin pōmex, from Latin pūmex, alteration of spūma, foam.]

pu·mi′ceous (pyo͞o-mĭsh′əs, pə-) adj.
pum′ic·er n.