We found 37 dictionaries that define the word octane:

General (25 matching dictionaries)

1. octane: Longman Dictionary of Contemporary English
2. octane: Merriam-Webster
3. octane: Oxford Learner's Dictionaries
4. octane: American Heritage Dictionary of the English Language
5. octane: Collins English Dictionary
6. octane: Vocabulary.com
7. Octane, octane: Wordnik
8. -octane, octane: Cambridge Advanced Learner's Dictionary
9. octane: Wiktionary
10. octane: Webster's New World College Dictionary, 4th Ed.
11. octane: The Wordsmyth English Dictionary-Thesaurus
12. octane: Infoplease Dictionary
13. octane: Dictionary.com
14. octane: Online Etymology Dictionary
15. octane: Cambridge Essential American English Dictionary
16. Octane (OST), Octane (Sirius XM), Octane (album), Octane (disambiguation), Octane (film), Octane (magazine), Octane: Wikipedia, the Free Encyclopedia
17. Octane: Online Plain Text English Dictionary
18. octane: Webster's Revised Unabridged, 1913 Edition
19. octane: Rhymezone
20. Octane: AllWords.com Multi-Lingual Dictionary
21. octane: FreeDictionary.org
22. octane: Mnemonic Dictionary
23. octane: TheFreeDictionary.com

Business (2 matching dictionaries)

24. Octane: Energy Dictionary
25. BusinessDictionary.com (No longer online)

Computing (1 matching dictionary)

26. octane: Encyclopedia

Medicine (1 matching dictionary)

27. online medical dictionary (No longer online)

Miscellaneous (1 matching dictionary)

28. OCTANE: Acronym Finder

Science (1 matching dictionary)

29. General Chemistry Online (No longer online)

Slang (3 matching dictionaries)

30. octane: Green’s Dictionary of Slang
31. Octane: Street Terms: Drugs and the Drug Trade
32. octane: Urban Dictionary

Tech (3 matching dictionaries)

33. AUTOMOTIVE TERMS (No longer online)
34. Energy Terms (No longer online)
35. Glossary of Meteorology (No longer online)

(Note: See octanes as well.)

Definitions from Wiktionary ( ) ▸ noun:  (organic chemistry) Any of the eighteen isomeric aliphatic hydrocarbons (C₈H₁₈) found in petroleum, especially an iso-octane 2,2,4 trimethyl-pentane; they are used as fuels and solvents. ▸ noun:  octane number Similar: iso-octane, n-octane, isooctane, octadecane, octyl, trimethylpentane, isopentane, octanol, octacontane, isocetane, more... Types: 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, more... Phrases: octane number, Octane rating, high octane, octane numbers, octane ratings, more... Adjectives: high, iso, normal, low, liquid, pure, 100, gaseous, sufficient, clear, average ▸ Word origin ▸ Words similar to octane ▸ Usage examples for octane ▸ Idioms related to octane ▸ Wikipedia articles (New!) ▸ Popular adjectives describing octane ▸ Words that often appear near octane ▸ Rhymes of octane ▸ Invented words related to octane