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Houghton Mifflin

sy·e·nite  audio  (s-nt) KEY 

NOUN:
An igneous rock composed primarily of alkali feldspar together with other minerals, such as hornblende.

ETYMOLOGY:
Latin Synts (lapis), (stone) of Syene, from Syn, Syene, an ancient city of southern Egypt, from Greek Sun

OTHER FORMS:
sye·nitic  (-ntk) KEY (Adjective)


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