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[mass noun] A grey crystalline allotropic form of carbon which occurs as a mineral in some rocks and can be made from coke. It is used as a solid lubricant, in pencils, and as a moderator in nuclear reactors.
- ‘The sample contains graphite, but no monazite was found in the heavy mineral concentrates.’
- ‘The cesium ions interact with the graphite and eject the carbon ions.’
- ‘Arrows can be made from wood, fibreglass, aluminium and carbon graphite.’
- ‘A diamond is a perfect crystal lattice while the graphite arrangement is more random.’
- ‘A scanning tunneling microscope image shows liquid crystal molecules aligned on a sheet of graphite.’
- ‘The leads are comprised of finely ground graphite and clay, which results in smooth, consistent lay down.’
- ‘One of the benefits of using graphite is that it keeps the silver from oxidizing, so bullets come out bright and shiny.’
- ‘The sheet of graphite has rows of conjoined hexagons, separated by horizontally running zig-zag lines.’
- ‘A nanotube is essentially a sheet of graphite rolled into a cylinder forming a single molecule.’
- ‘Diamond and graphite both have a variety of important commercial and industrial uses.’
- ‘For instance, carbon may exist as either graphite or diamond in its solid phase.’
- ‘One possibility of this sort of manipulation could turn carbon into either graphite or diamond.’
- ‘Carbon, in the forms of charcoal, graphite, and diamond, was one of the earliest elements known to man.’
- ‘Students were allowed to use graphite pencil or a very fine-tipped felt pen.’
- ‘With the exception of graphite, they are poor conductors of electricity.’
- ‘Some materials commonly used as unreactive anodes are platinum and graphite.’
- ‘Permanent moulds also can be made from either bronze, aluminum, rubber or graphite.’
- ‘It even resumed operations of an experimental graphite nuclear reactor.’
- ‘Erasers made for graphite in black pencils work by adhesion, lifting the mark from the paper.’
- ‘It involved passing an electrical discharge between two rods of graphite (which is pure carbon).’
Late 18th century: coined in German ( Graphit), from Greek graphein write (because of its use as pencil ‘lead’).
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