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petrography

American  
[pi-trog-ruh-fee] / pɪˈtrɒg rə fi /

noun

  1. the branch of petrology dealing with the description and classification of rocks, especially by microscopic examination.


petrography British  
/ ˌpɛtrəˈɡræfɪk, pɛˈtrɒɡrəfɪ /

noun

  1.  petrog.  the branch of petrology concerned with the description and classification of rocks

"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 Scientific  
/ pə-trŏgrə-fē /
  1. The description and classification of rocks, especially by means of microscopic analysis.


Other Word Forms

Etymology

Origin of petrography

From the New Latin word petrographia, dating back to 1645–55. See petro- 1, -graphy

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

Endress, M., Spettel, B. & Bischoff, A. Chemistry, petrography and mineralogy of the Tonk CI chondrite: preliminary results.

From Nature Nov. 28, 2017

Development of Petrographical Geology.—Theophrastus, the favourite pupil of Aristotle, wrote a treatise On Stones, which has come down to our own day, and may be regarded as the earliest work on petrography.

From Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 6 "Geodesy" to "Geometry" by Various

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

From Ann Veronica, a modern love story by Wells, H. G. (Herbert George)

A feature of his tenure of office was the impetus given to microscopic petrography, a branch of geology to which he had devoted special study, by a splendid collection of sections of British rocks.

From Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 5 "Gassendi, Pierre" to "Geocentric" by Various

Delicate cleavage-plates of gypsum are used in microscopic petrography for the determination of certain optical constants in the rock-forming minerals.

From Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 7 "Gyantse" to "Hallel" by Various

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