Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Resembling graphite.

from the GNU version of the Collaborative International Dictionary of English

  • adj. Resembling graphite or plumbago.

from The Century Dictionary and Cyclopedia

  • Resembling graphite or plumbago.
  • n. A form of graphite, occurring in certain schists, supposed to be peculiar in its readier combustibility. This, however, is probably due to the minute size and purity of the scales.

Etymologies

graphite +‎ -oid (Wiktionary)

Examples

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