10. 
    pumice
    Dacitic pumice fragments erupted by Mount Pinatubo, Philippines, during an enormous eruption on 15 June 1991. Credit: W. E. Scott / U.S. Geological Survey A light, porous volcanic rock that forms during explosive eruptions. It resembles a sponge because it consists of a network of gas bubbles f...
    Found op http://www.daviddarling.info/encyclopedia/P/pumice.html
    
    
11. 
    pumice
    pumice (pŭm'is) , volcanic glass formed by the solidification of lava that is permeated with gas bubbles. Usually found at the surface of a lava flow, it is colorless or light gray and has the general appearance of a rock froth. The viscosity of the lava, the quantity of water vapor and ga...
    Found op http://www.infoplease.com/ce6/sci/A0840515.html
    
    
12. 
    Pumice
    Pumice is a light igneous volcanic rock used as a scourer, abrasive, polisher and in the manufacture of soundproofing tiles. Pumice can occur in any type of lava, but is more common in rhyolite and trachyte than in basalt. Pumice is formed from molten lava that cools so quickly that it doesn't have ...
    Found op http://www.probertencyclopaedia.com/browse/HP.HTM
    
    
13. 
    pumice
    Type: Term Pronunciation: pŭm′is Definitions: 1. Volcanic cinders ground to particles of varying sizes; used in dentistry for polishing restorations or teeth; an abrasive.
    Found op http://www.medilexicon.com/medicaldictionary.php?t=74082
    
    
14. 
    pumice
    Light volcanic rock produced by the frothing action of expanding gases during the solidification of lava. It has the texture of a hard sponge and is used as an abrasive
    Found op http://www.talktalk.co.uk/reference/encyclopaedia/hutchinson/m0015292.html
    
    
15. 
    Pumice
    A light and porous lava. Used in solid and powdered form as an abrasive.
    Found op http://www.ccnphawaii.com/glossary-p.htm
    
    
16. 
    Pumice
    Light-colored, frothy volcanic rock, usually of dacite or rhyolite composition, formed by the expansion of gas in erupting lava. Commonly seen as lumps or fragments of pea-size and larger, but can also occur abundantly as ash-sized particles.
    Found op http://midju.tripod.com/glossary.html
    
    
17. 
    pumice
    a light, porous volcanic rock that forms during explosive eruptions; all types of magma form pumice
    Found op http://www.pbs.org/wgbh/nova/volcano/glossary.html
    
    
18. 
    Pumice
    Light-colored, frothy volcanic rock, usually of dacite or rhyolite composition, formed by the expansion of gas in erupting lava. Commonly seen as lumps or fragments of pea-size and larger, but can also occur abundantly as ash-sized particles.
    Found op http://volcano.oregonstate.edu/education/glossary.html
    
    
19. 
    pumice
    1) Abrasive material 2) Abrasive stuff 3) An abrasive 4) Common exfoliant ingredient 5) Pumice stone 6) Rock 7) Stone 8) Stone used by pedicurists 9) Stonelike abrasive 10) Volcanic rock
    Found op http://www.mijnwoordenboek.nl/EN/crossword-dictionary/pumice/1
    
    

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