(1) Used as a lubricant and as a moderator in nuclear reactors
WiktionaryText
Etymology
From German Graphit (A.G.Werner 1789), from Ancient Greek ‘I write’.
Noun
An allotrope of carbon consisting of planes of carbon atoms arranged in hexagonal arrays with the planes stacked loosely. Used as a dry lubricant, and in leadpencils. Is edible.
A compositeplastic made with graphite fibers noted for light weight strength and stiffness.