Search Result for "cordierite": 
Wordnet 3.0

NOUN (1)

1. a blue mineral of magnesium and iron and aluminum and silicon and oxygen; often used as a gemstone; 



The Collaborative International Dictionary of English v.0.48:

Cordierite \Cor"di*er*ite\ (k[^o]r"d[i^]*[~e]r*[imac]t), n.
   [Named after the geologist Cordier.] (Min.)
   See Iolite.
   [1913 Webster]


WordNet (r) 3.0 (2006):

cordierite
    n 1: a blue mineral of magnesium and iron and aluminum and
         silicon and oxygen; often used as a gemstone