石墨 — meaning in English

English meaning

• graphite noun A soft, dark grey form of carbon used in pencil "lead," lubricants, and industrial materials.
• plumbago noun A plant of the genus Plumbago; leadwort.

Senses

石墨 is used for these senses in English:

• graphite An allotrope of carbon, consisting of planes of carbon atoms arranged in hexagonal arrays with the planes stacked loosely, that is used as a dry lubricant, in "lead" pencils, and as a moderator in some nuclear reactors.
• pencil lead The material (usually black or dark gray) which allows a pencil to work. Usually a mixture of graphite and smaller amounts of other material, but not actual lead.
• plumbago (mineral, now, chiefly, historical) Graphite. [from 18th c.]

graphite — full definition

1. noun A soft, dark grey form of carbon used in pencil "lead," lubricants, and industrial materials.
2. noun A dark grey color resembling graphite.