petrography [pi-trog-ruh-fee] EXAMPLES|WORD ORIGIN noun the branch of petrology dealing with the description and classification of rocks, especially by microscopic examination.

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  • Origin of petrography From the New Latin word petrographia, dating back to 1645–55. See petro-1, -graphy Related formspe·trog·ra·pher, nounpet·ro·graph·ic [pe-truh-graf-ik] /ˌpɛ trəˈgræf ɪk/, pet·ro·graph·i·cal, adjectivepet·ro·graph·i·cal·ly, adverb Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019 Examples from the Web for petrography Historical Examples of petrography

  • A faint buzz above the ceiling witnessed that petrography, too, was active.

    Ann Veronica

    H. G. Wells

  • Petrog′lyphy, the art of writing on rocks or stones; Petrog′rapher, a student of petrography.

    Chambers’s Twentieth Century Dictionary (part 3 of 4: N-R)


  • Petrography and laboratory psychology were among the new sciences fostered by the new university.

    Encyclopaedia Britannica, 11th Edition, Volume 15, Slice 4


  • A more general name sometimes employed is that of Petrography.

    The Chain of Life in Geological Time

    Sir J. William Dawson

  • Thus from mineralogy and petrography it contains information regarding the origin and subsequent mutations of minerals and rocks.

    Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 6


  • British Dictionary definitions for petrography petrography noun the branch of petrology concerned with the description and classification of rocksAbbreviation: petrog Derived Formspetrographer, nounpetrographic (ˌpɛtrəˈɡræfɪk) or petrographical, adjectivepetrographically, adverb Collins English Dictionary – Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 petrography in Science petrography [pə-trŏg′rə-fē] The description and classification of rocks, especially by means of microscopic analysis. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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