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2 definitions found
 for Graphite
From The Collaborative International Dictionary of English v.0.48 :

  Graphite \Graph"ite\, n. [Gr. gra`fein to write: cf. F.
     graphite. See Graphic.] (Min.)
     Native carbon in hexagonal crystals, also foliated or
     granular massive, of black color and metallic luster, and so
     soft as to leave a trace on paper. It is used for pencils
     (improperly called lead pencils), for crucibles, and as a
     lubricator, etc. Often called plumbago or black lead.
     [1913 Webster]
     Graphite battery (Elec.), a voltaic battery consisting of
        zinc and carbon in sulphuric acid, or other exciting
        [1913 Webster]

From WordNet (r) 3.0 (2006) :

      n 1: used as a lubricant and as a moderator in nuclear reactors
           [syn: graphite, black lead, plumbago]

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