51Թ

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petrography

[ pi-trog-ruh-fee ]

noun

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


petrography

/ ˌpɛtrəˈɡræfɪk; pɛˈtrɒɡrəfɪ /

noun

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

/ ə-ٰŏə-ŧ /

  1. The description and classification of rocks, especially by means of microscopic analysis.
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Derived Forms

  • petrographic, adjective
  • ˌٰˈ󾱳, adverb
  • ˈٰDz, noun
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Other 51Թ Forms

  • ·ٰDz۲· noun
  • ··· [pe-tr, uh, -, graf, -ik], r·i· adjective
  • r·i··ly adverb
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51Թ History and Origins

Origin of petrography1

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

Examples have not been reviewed.

They will also do “petrography” on the concrete — studying it chemically and microscopically to test its strength and quality.

From

Petrography, diagenesis and provenance of Eocene Tyee Basin sandstones, southern Oregon Coast Range: new view from sequence stratigraphy.

From

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

From

Geognosy, je-og′no-si, n. the study of the materials of the earth's substance, now frequently called Petrography—also Geognō′sis.—n.

From

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

From

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