A non-graphitic carbon which upon graphitization heat treatment converts into graphitic carbon.
Note:
If it is preferred to define the characterizable state of material instead of its behaviour during subsequent treatment, the term 'pregraphitic carbon' could be considered.
Source:
PAC, 1995, 67, 473. 'Recommended terminology for the description of carbon as a solid (IUPAC Recommendations 1995)' on page 493 (https://doi.org/10.1351/pac199567030473)