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TOEFL BNC: 16505 COCA: 11261

graphite

Word family
Related topics: Chemistry
graph·ite /ˈɡræfaɪt/ noun [uncountableU]  
HCa soft black substance that is a kind of carbon, used in pencils, paints, and electrical equipment 石墨〔碳的一种形式,用于铅笔、油漆和电气设备中〕
Examples from the Corpus
Origin graphite
(1700-1800) German graphit, from Greek graphein ( → -GRAPHY); because it is used in pencils
graph·ite noun
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