from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. The description and classification of rocks.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. the branch of petrology that deals with the scientific description and classification of rocks
  • n. The art of writing on stone.

from the GNU version of the Collaborative International Dictionary of English

  • n. The art of writing on stone.
  • n. The scientific description of rocks; that department of science which investigates the constitution of rocks; petrology.

from The Century Dictionary and Cyclopedia

  • n. The art of writing or inscribing on stone.
  • n. The study of rocks; lithology; petrology.


Sorry, no etymologies found.


  • As the BBC reports, Robert Ixer of the University of Leicester and Richard Bevins of the National Museum of Wales pinpointed the source to within 230 feet and did so by "detailing the mineral content and the textural relationships within the rock, a process known as petrography."


  • By detailing the mineral content and the textural relationships within the rock, a process known as petrography, they found that 99% of the samples could be matched to rocks found in this particular set of outcrops.

    BBC News - Home

  • The geomorphology of the area reflects its geological constitution, in particular its petrography and tectonic structure.

    Jungfrau-Aletsch-Bietschhorn, Switzerland

  • Geology, petrography, and geochemistry of the volcanic islands of Tonga.

    Tongan tropical moist forests

  • Oh, that one's a P.Geo - a professional geologist - is can log drill holes, update and construct geological models, they are experts in igneous and metamorphic petrology and petrography, hydrogeology, sedimentolgoy and structural geology.

    Archive 2008-04-01

  • These are splendid specimens that give us a peek at some awesomely fragile organisms, and modern technology helps by giving us new tools, like x-ray computed tomography (CT), scanning electron microscopy (SEM), thin-section petrography, synchrotron X-ray tomographic microscopy (SRXTM), and computer-aided visualization, that allow us to dig into the fine detail inside these delicate specimens and display and manipulate the data.

    Dissecting embryos from half a billion years ago - The Panda's Thumb

  • These sample will be analyzed mineralogically (petrography, X-ray diffraction) and geochemically (Inductively Coupled Plasma-Mass Spectrometry, X-Ray Fluorescence) to identify and characterize the ore deposits and the metal production waste.

    Interactive Dig Sagalassos 2003 - Metallurgical Studies Report 2

  • "Business has been a bit slow, of course, what with the weather, but I've been keeping my hopes up that fine gentlemen like yourselves would need professional assistance with matters in geology, petrography, mineralogy, or even gemology, such as it may be, and I graduated first among my guild in mine engineering and geology, with a secondary degree in mechanics ...."

    The Dragons of Krynn

  • To the graduates were assigned courses in advanced geology, mineralogy, petrography, advanced economic geology, and the economic geology of the Southern Appalachians.

    History of the University of Virginia, 1819-1919

  • Professor T.L. Watson, the new incumbent of the chair of geology, delivered a series of specialized lectures, — accompanied by laboratory and field work, — on engineering geology, economic geology, and petrography; and in 1908 – 09, Professor R.M. Bird, of the chemical faculty, gave instruction in chemical engineering.

    History of the University of Virginia, 1819-1919


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  • While some study subjects that bleed

    Or classify flower and weed,

    Petrography suits

    More disciplined troops

    For rocks are hard science indeed.

    February 25, 2018