What does Graphite mean? - Definitions.net
The mineral graphite is an allotrope of carbon. It was named by Abraham Gottlob Werner in 1789 from the Ancient Greek γράφω, "to draw/write", for its use in pencils, where it is commonly called lead. Unlike diamond, graphite is an electrical conductor, a semimetal. It is, consequently, useful in such applications as arc lamp electrodes.