(Science: chemical) A very light porous volcanic scoria, usually of a gray colour, the pores of which are capillary and parallel, giving it a fibrous structure. It is supposed to be produced by the disengagement of watery vapor without liquid or plastic lava. It is much used, especially. In the form of powder, for smoothing and polishing.
Synonym: pumice stone.
Origin: L. Pumex, pumicis, prob. Akin to spuma foam: cf. AS. Pumic-stan. Cf. Pounce a powder, Spume.
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... face from parasites.. and some leg and groin. Clearing wounds out with Crocodile product on head and face slowly. Improvement noticed. Bought a Pumice brush to scrap effectively and lightly off the parasites from heal and bottom of sole of the foot while in the enzyme bath. Feb. 9th Face improving ...
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