graph ‧ ite /ˈɡræfaɪt/ BrE AmE noun [uncountable]
[ Date: 1700-1800 ; Language: German ; Origin: graphit , from Greek graphein ( ⇨ ↑ -graphy ); because it is used in pencils ]
a soft black substance that is a kind of ↑ carbon , used in pencils, paints, and electrical equipment