Look up: orthoclase

1. orthoclase
   [n] - a white or colored monoclinic feldspar
   Found on http://www.webdictionary.co.uk/definitio
   
   
2. Orthoclase
   Or'tho·clase noun [ Ortho- + Greek ... to break.] (Min.) Common or potash feldspar crystallizing in the monoclinic system and having two cleavages at right angles to each other. See Feldspar .
   Found on http://www.encyclo.co.uk/webster/O/34
   
   
3. orthoclase
   <chemical> Common or potash feldspar crystallizing in the monoclinic system and having two cleavages at right angles to each other. See Feldspar. ... Origin: Ortho- + Gr. To break. ... Source: Websters Dictionary ... (01 Mar 1998) ...
   Found on http://www.mondofacto.com/facts/dictiona
   
   
4. orthoclase
   noun a white or colored monoclinic feldspar
   Found on http://wordnetweb.princeton.edu/perl/web
   
   
5. Orthoclase
   • (n.) Common or potash feldspar crystallizing in the monoclinic system and having two cleavages at right angles to each other. See Feldspar.
   Found on http://thinkexist.com/dictionary/meaning
   
   
6. orthoclase
   common alkali feldspar mineral, a potassium aluminosilicate (KAlSi3O8); it usually occurs as variously coloured, frequently twinned crystals in ... [4 related articles]
   Found on http://www.britannica.com/eb/a-z/o/33
   
   
7. Orthoclase
   Orthoclase has the formulae KAlSi3O8 and a relative hardness of 6. It is used in the manufacture of porcelain and for other industrial purposes.
   Found on http://www.probertencyclopaedia.com/brow
   
   
8. Orthoclase
   `Orthoclase` (endmember formula KAlSi₃O₈) is an important tectosilicate mineral which forms igneous rock. The name is from the Greek for "straight fracture," because its two cleavage planes are at right angles to each other. Alternate names are `alkali fel...
   Found on http://en.wikipedia.org/wiki/Orthoclase