A synthetic graphite made by the Acheson process.
Reference to Acheson in combination with @S06233@ honours the inventor of the first technical @G02691@. Today the term Acheson @G02684@, however, is of historical interest only because it no longer covers the plurality of @S06233@.
PAC, 1995, 67, 473. 'Recommended terminology for the description of carbon as a solid (IUPAC Recommendations 1995)' on page 476 (https://doi.org/10.1351/pac199567030473)