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Graphite

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Graphite

(Science: chemical) native carbon in hexagonal crystals, also foliated or granular massive, of black colour 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.

Synonym: plumbago, black lead.

Origin: gr. To write: cf. F. Graphite.