from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A light, porous, glassy lava, used in solid form as an abrasive and in powdered form as a polish and an abrasive.
- transitive v. To clean, polish, or smooth with pumice.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A light, porous type of pyroclastic igneous rock, formed during explosive volcanic eruptions when liquid lava is ejected into the air as a froth containing masses of gas bubbles. As the lava solidifies, the bubbles are frozen into the rock.
- v. To abrade or roughen with pumice.
from the GNU version of the Collaborative International Dictionary of English
- n. A very light porous volcanic scoria, usually of a gray color, 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, esp. in the form of powder, for smoothing and polishing. Called also pumice stone.
from The Century Dictionary and Cyclopedia
- n. Lava having a loose, spongy or cellular structure; lava from which gas or steam has escaped in large quantities while it was becoming consolidated.
- To polish, rub, or otherwise treat with pumicestone; especially, in silver-plating, to clean with pumice and water, as the surface of an article to be plated.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- v. rub with pumice, in order to clean or to smoothen
- n. a light glass formed on the surface of some lavas; used as an abrasive
The name pumice is derived from the Latin word pumex, meaning foam.
For a similar style, try Old Navy's cropped cotton twill blazer in pumice.
Lava Soap contains a fine grit of pumice, which is death on grease and grime, but tough on the skin.
So-called pumice-concrete "hollow floor fillers" can be used in constructing ribbed floors (Fig. 47), e.g. when there is a shortage of form - work material, since such floors consist exclusively of prefabricated members.
This book is intended to stimulate interest in a line of approach to such problems by describing how to build simple, inexpensive houses out of a very commonplace raw material, namely pumice, i.e. volcanic glass or hardened volcanic froth.
Pozzolana identified as pumice, yellow fine-grained tuff, volcanic ash.
When the lighter superficial lava is brought suddenly into contact with water, as when a lava-stream enters the sea, it becomes still lighter and more porous -- forming the well-known substance called pumice, so much used for polishing.
Porous volcanic rock called pumice and Southern pine bark.
Other landscape features include crater lakes, fumaroles, lava tubes, sulfur fields and a great variety of lava and other ejecta such as pumice, ash and tuff.
Bricks made of diatomatious earth (Kieselguhr), loose diatomatious earth or some other material such as pumice stone, or even air gaps can be used as a means of containing the heat.