Look up: silica

1. 
   silica
   amorphous silicon dioxide (glass). It is a structural component in many organisms, such as diatoms and horsetails.
   Found on http://www.ucmp.berkeley.edu/glossary/gl
   
   
2. 
   Silica
   Silica refers to silicon dioxide (SiO2). A very common mineral that is found in many forms including quartz, opal, chert.
   Found on http://www.encyclo.co.uk/nol.php
   
   
3. 
   silica
   [n] - a white or colorless vitreous insoluble solid (SiO2)
   Found on http://www.webdictionary.co.uk/definitio
   
   
4. 
   Silica
   Abscesses, wounds that are slow to heal, toothache and earache, and similar localized infections. Silica is a mineral prepared from sand or flint rock. Homepaths tend to use it more for long-term prescriptions than for everyday ailments. However its can be very useful for treating pus-filled or suppurating wounds, since it encourages the body to ex...
   Found on http://www.marar.co.uk/firstaid/glossary
   
   
5. 
   Silica
   Silica is the common name for silicon dioxide, SiO2.It exists in nature as crystalline quartz.
   Found on http://www.chemicalglossary.net/definiti
   
   
6. 
   Silica
   Silica: The chief component of sand and a substance responsible for lung disease and cancer. Crystalline silica of respirable size is primarily quartz dust occurring in industrial and occupational settings in the form of fine, breathable particles. Respirable crystalline silica results from mining and grinding coal. In the year 2000, crystalline si ...
   Found on http://www.medterms.com/script/main/art.
   
   
7. 
   silica
   a) a vitreous form of silicon dioxide (Si02); b) a glass used in a highly-purified form in semiconductor processing operations, e.g. ,for furnace tubes, slice holders, and source holders in diffusion operations Category: Chemistry
   Found on http://www.mijnwoordenboek.nl/definition
   
   
8. 
   Silica
   Sil'i·ca noun [ New Latin , from Latin silex , silics , a flint.] (Chemistry) Silicon dioxide, SiO.... It constitutes ordinary quartz (also opal and tridymite), and is artifically prepared as a very fine, white, tasteless, inodorous powder.
   Found on http://www.encyclo.co.uk/webster/S/102
   
   
9. 
   silica
   Fine particulate dust from quartz rock that is known to cause a progressive lung injury over long-term. ... See: pneumoconiosis. ... (27 Sep 1997) ...
   Found on http://www.mondofacto.com/facts/dictiona
   
   
10. 
    silica
    silicon oxide noun a white or colorless vitreous insoluble solid (SiO2); various forms occur widely in the earth`s crust as quartz or cristobalite or tridymite or lechartelierite
    Found on http://wordnet.princeton.edu/perl/webwn?
    
    
11. 
    silica
    (sil´ĭ-kә) silicon dioxide, which occurs in nature as agate, amethyst, sand, quartz, chalcedony, cristobalite, and flint; it is one of the major constituents of dental porcelain, and in granular form serves as a dental abrasive and polishing agent. See also silicosis.
    Found on http://www.mercksource.com/pp/us/cns/cns
    
    
12. 
    Silica
    • (n.) Silicon dioxide, SiO/. It constitutes ordinary quartz (also opal and tridymite), and is artifically prepared as a very fine, white, tasteless, inodorous powder.
    Found on http://thinkexist.com/dictionary/meaning
    
    
13. 
    silica
    compound of the two most abundant elements in the Earth`s crust, silicon and oxygen, SiO2. The mass of the Earth`s crust is 59 percent silica, the ... [40 related articles]
    Found on http://www.britannica.com/eb/a-z/s/94
    
    
14. 
    silica
    A white or colorless mineral composed of silicon dioxide (SiO₂). It occurs commonly as quartz and sand, and in many other familiar rocks and minerals, including flint, granite, amethyst, and rock-crystal. Silica is refractory and inert, though it dissolves in hydrogen fluoride...
    Found on http://www.daviddarling.info/encyclopedi
    
    
15. 
    silica
    silica or silicon dioxide,chemical compound, SiO2. It is insoluble in water, slightly soluble in alkalies, and soluble in dilute hydrofluoric acid. Pure silica is colorless to white. It occurs in several forms and is widely and abundantly distributed throughout the earth, both in the pure state and ...
    Found on http://www.infoplease.com/ce6/sci/A08452