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petrology

[pi-trol-uh-jee] /pɪˈtrɒl ə dʒi/
noun
1.
the scientific study of rocks, including petrography and petrogenesis.
Origin
1805-1815
1805-15; petro-1 + -logy
Related forms
petrologic
[pe-truh-loj-ik] /ˌpɛ trəˈlɒdʒ ɪk/ (Show IPA),
petrological, adjective
petrologically, adverb
petrologist, noun
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for petrologically

petrology

/pɛˈtrɒlədʒɪ/
noun (pl) -gies
1.
the study of the composition, origin, structure, and formation of rocks petrol
Derived Forms
petrological (ˌpɛtrəˈlɒdʒɪkəl) adjective
petrologically, adverb
petrologist, noun
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
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Word Origin and History for petrologically

petrology

n.

1811 (erroneously as petralogy), from petro- (1) "rock" + -ology.

Online Etymology Dictionary, © 2010 Douglas Harper
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petrologically in Science
petrology
  (pə-trŏl'ə-jē)   
The scientific study of the origin, composition, and structure of rocks.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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