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petro
[ pe-troh ]
/ ˈpɛ troʊ /
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This shows grade level based on the word's complexity.
adjective
of or relating to petroleum or the petroleum industry.
noun
Canadian. the federally owned petroleum industry.
QUIZ
QUIZ YOURSELF ON "WAS" VS. "WERE"!
Were you ready for a quiz on this topic? Well, here it is! See how well you can differentiate between the uses of "was" vs. "were" in this quiz.
Question 1 of 7
“Was” is used for the indicative past tense of “to be,” and “were” is only used for the subjunctive past tense.
Origin of petro
First recorded in 1970–75; independent use of petro-2
Words nearby petro
Other definitions for petro (2 of 3)
petro-1
a combining form meaning “rock,” “stone,” used in the formation of compound words: petrology.
Origin of petro-
1<Greek, combining form of pétra rock, pétros a stone
Other definitions for petro (3 of 3)
petro-2
a combining form meaning “petroleum,” “the extraction and export of petroleum,” used in the formation of compound words: petrochemistry; petropower.
Origin of petro-
2Extracted from petroleum
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022
How to use petro in a sentence
British Dictionary definitions for petro
petro-
before a vowel petr-
combining form
indicating stone or rockpetrology
indicating petroleum, its products, etcpetrochemical
of or relating to a petroleum-producing countrypetrostate
Word Origin for petro-
from Greek petra rock or petros stone
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
Medical definitions for petro
petro-
pref.
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.