Carburet of iron, a substance used for pencils, and very improperly called black-lead.
Word of the Day: Catachrestical
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.
Graphite
Encyclopedia Britannica
GRAPHITE. See Carbon, vol. v. p. 86, and Furnace, vol. ix. p. 843.
9th ed. Encyclopædia Britannica, vol. 11, p. 53
[13 words — estimated reading time: 1 minute]
[13 words — estimated reading time: 1 minute]
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