Look up: perlite

1. Perlite
   Granular volcanic rock, used to improve the aeration in potting soil. No nutrient value.
   Found on http://www.emilycompost.com/garden_gloss
   
   
2. perlite
   a partially altered glassy volcanic rock with a chemical composition similar to that of obsidians (i.e. of granites) that is characterized by closely spaced concentric cracks; most perlites are light gray in color.
   Found on http://www.cst.cmich.edu/users/dietr1rv/
   
   
3. Perlite
   Expanded volcanic glass, very light in weight and useful as insulation although it is not as effective as some materials. Can be added to plaster and is fire resistant.
   Found on http://www.greenconstruction.co.uk/gloss
   
   
4. perlite
   a form of siliceous lava that is characterized by many spherical and convoluted cracks.When heated to 720-1090 degrees C it expands to 10-20 times its initial volume Category: Chemistry
   Found on http://www.mijnwoordenboek.nl/definition
   
   
5. Perlite
   An aggregate formed by heating and expanding siliceous volcanic glass.
   Found on http://www.rookinspections.com/glossary/
   
   
6. Perlite
   Per'lite noun (Min.) Same as Pearlite .
   Found on http://www.encyclo.co.uk/webster/P/58
   
   
7. perlite
   <chemical> Same as Pearlite. ... Source: Websters Dictionary ... (01 Mar 1998) ...
   Found on http://www.mondofacto.com/facts/dictiona
   
   
8. Perlite
   • (n.) Same as Pearlite.
   Found on http://thinkexist.com/dictionary/meaning
   
   
9. perlite
   a natural glass with concentric cracks such that the rock breaks into small, pearllike bodies. It is formed by the rapid cooling of viscous lava or ... [1 related articles]
   Found on http://www.britannica.com/eb/a-z/p/45
   
   
10. Perlite
    Perlite is an amorphous volcanic glass that has a relatively high water content, typically formed by the hydration of obsidian. It occurs naturally and has the unusual property of greatly expanding when heated sufficiently. It is an industrial mineral and a commercial product useful for its light w...
    Found on http://en.wikipedia.org/wiki/Perlite
    
    
11. PERLITE
    An aggregate formed by heating and expanding siliceous volcanic glass.
    Found on http://www.proofrock.com/glossary.html
    
    
12. Perlite
    A perlite is an obsidian, or other vitreous rock with a concentric structure and which is expansible by heating.
    Found on http://www.probertencyclopaedia.com/brow
    
    
13. Perlite
    An additive that aerates the medium, preventing compaction, creating air pockets, and reducing water retention. Is usually in either, medium or coarse grades, and is a white colour, appearing almost like small stones, it's light to lift and easily crushed into powder... No you can't snort it to get high
    Found on http://www.rollitup.org/general-marijuan