of or pertaining to petroleum or the petroleum industry.
Canadian. the federally owned petroleum industry.

1970–75; independent use of petro-2 Unabridged


a combining form meaning “rock,” “stone,” used in the formation of compound words: petrology.
Also, petri-; especially before a vowel, petr-.

< Greek, combining form of pétra rock, pétros a stone


a combining form meaning “petroleum,” “the extraction and export of petroleum,” used in the formation of compound words: petrochemistry; petropower.

extracted from petroleum Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To petro
World English Dictionary
petro- or (before a vowel) petr-
combining form
1.  indicating stone or rock: petrology
2.  indicating petroleum, its products, etc: petrochemical
3.  of or relating to a petroleum-producing country: petrostate
[from Greek petra rock or petros stone]
petr- or (before a vowel) petr-
combining form
[from Greek petra rock or petros stone]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
American Heritage
Medical Dictionary

petro- or petri- or petr-
Rock; stone; stone-like hardness: petrous.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Cite This Source
Example sentences
High oil prices give petro-economies the wherewithal to counter discontent by dispensing largesse.
But, petro-fuels are so much more readily available in bulk, that they took over the market.
If petro rises so high that it slows down the economy, so be it.
Disturbed migration paths and petro chemical seepage cause long term disease and sterility in animal populations.
Copyright © 2014, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature