Search Result for "sial": 
Wordnet 3.0

NOUN (1)

1. the granitelike rocks that form the outermost layer of the earth's crust; rich in silicon and aluminum; 



WordNet (r) 3.0 (2006):

sial
    n 1: the granitelike rocks that form the outermost layer of the
         earth's crust; rich in silicon and aluminum