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.
Origin of petrography From the New Latin word petrographia, dating back to 1645–55. See, 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 Dictionary.com 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.
H. G. Wells
Petrog′lyphy, the art of writing on rocks or stones; Petrog′rapher, a student of petrography.
Petrography and laboratory psychology were among the new sciences fostered by the new university.
A more general name sometimes employed is that of Petrography.
Sir J. William Dawson
Thus from mineralogy and petrography it contains information regarding the origin and subsequent mutations of minerals and rocks.
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.