Usually means: Natural fossil fuel, primarily hydrocarbons.
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We found 44 dictionaries that define the word petroleum:

General (27 matching dictionaries)
  1. petroleum: Merriam-Webster.com
  2. petroleum: Oxford Learner's Dictionaries
  3. petroleum: American Heritage Dictionary of the English Language
  4. petroleum: Collins English Dictionary
  5. petroleum: Vocabulary.com
  6. Petroleum, petroleum: Wordnik
  7. petroleum: Cambridge Advanced Learner's Dictionary
  8. petroleum: Wiktionary
  9. petroleum: Webster's New World College Dictionary, 4th Ed.
  10. petroleum: The Wordsmyth English Dictionary-Thesaurus
  11. petroleum: Infoplease Dictionary
  12. petroleum: Dictionary.com
  13. petroleum: Online Etymology Dictionary
  14. petroleum: Cambridge Essential American English Dictionary
  15. Petroleum (film), Petroleum: Wikipedia, the Free Encyclopedia
  16. Petroleum: Online Plain Text English Dictionary
  17. petroleum: Webster's Revised Unabridged, 1913 Edition
  18. petroleum: Rhymezone
  19. Petroleum: AllWords.com Multi-Lingual Dictionary
  20. petroleum: Webster's 1828 Dictionary
  21. petroleum: Free Dictionary
  22. petroleum: Mnemonic Dictionary
  23. petroleum: Dictionary/thesaurus
  24. petroleum: Wikimedia Commons US English Pronunciations
  25. Petroleum (disambiguation): Wikipedia, the Free Encyclopedia

Art (1 matching dictionary)
  1. Petroleum: Health & Beauty Glossary

Business (2 matching dictionaries)
  1. INVESTORWORDS (No longer online)
  2. BusinessDictionary.com (No longer online)

Computing (1 matching dictionary)
  1. petroleum: Encyclopedia

Medicine (4 matching dictionaries)
  1. Dorland's Illustrated Medical Dictionary (No longer online)
  2. Medical Dictionary (No longer online)
  3. online medical dictionary (No longer online)
  4. petroleum: Medical dictionary

Science (1 matching dictionary)
  1. Illustrated Glossary of Geologic Terms (No longer online)

Slang (1 matching dictionary)
  1. Petroleum: Urban Dictionary

Tech (7 matching dictionaries)
  1. AUTOMOTIVE TERMS (No longer online)
  2. Energy Terms (No longer online)
  3. Petroleum: Glossary of Terms on Engines and Emissions
  4. Explosives (No longer online)
  5. Petroleum: Beauty & Health Glossary
  6. Schlumberger Oilfield Glossary (No longer online)
  7. Oil and Gas Well Drilling and Servicing eTool (No longer online)

(Note: See petroleums as well.)

Definitions from Wiktionary (
)
American English Definition British English Definition
noun:  A flammable liquid ranging in color from clear to very dark brown and black, consisting mainly of hydrocarbons, occurring naturally in deposits under the Earth's surface.
noun:  A place in the United States:
noun:  An unincorporated community in Nottingham Township, Wells County, Indiana.
noun:  An unincorporated community in Allen County, Kentucky.
noun:  An unincorporated community in Ritchie County, West Virginia.

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    midnight blue,     teal,     slate gray,     charcoal,     deep sea green, more...



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