pumiceous


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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.
Mentioned in ?
References in classic literature ?
These beds are covered by others of a peculiar soft white stone, including much gypsum, and resembling chalk, but really of a pumiceous nature.
Half way up was a square enclosure of some greyish stone, which I found subsequently was built partly of coral and partly of pumiceous lava.
The sediment profile at Site C0014 exhibits a transition from hemipelagic ooze with pumiceous volcaniclastic sediments to a hydrothermally altered sequence of clays within the top ~10 mbsf of sediment [7].
(2000) found ferrihydrite between 0.20% and 0.51% in pumiceous, alluvial soils in Nayarit, Mexico, and Sellitto et al.
The pastes studied here show volcanic inclusions (pumiceous rock and volcanic glass).