graphite /ˈɡɹæfaɪt/noun 3verb 1forms 3 noun3 •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. •Graphite-reinforced plastic, a composite plastic made with graphite fibers noted for lightweight strength and stiffness.Modern tennis racquets are made of graphite, fibreglass and other man-made materials. •A grey colour, resembling graphite or the marks made with a graphite pencil. verb1 •To apply graphite to. formsgraphited · graphiting · graphites