from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Drawing, writing or inscription on stone, as a painting on a cave wall.

from The Century Dictionary and Cyclopedia

  • n. A writing on a rock; a petroglyph.


petro- + -graph (Wiktionary)


  • “diviner,” and the Noguchi petrograph, which have now made, so to speak, hidden things visible to a depth of twenty-five miles, and there too he will find a description of a score of ingenious devices for isolating blocks of deep-lying rock and bringing their desirable ingredients to the surface.

    The Shape of Things to Come


Log in or sign up to get involved in the conversation. It's quick and easy.