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petrog.

American  

abbreviation

  1. petrography.

petrog. British  

abbreviation

  1. petrography

"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

Example Sentences

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

From Project Gutenberg

Petrog′raphy, the study of rocks: petrology.—adj.

From Project Gutenberg

Petrog′eny, the science of the origin of rocks; Pet′roglyph, a rock-carving.—adj.

From Project Gutenberg

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.