noun ·Uncommon ·Advanced level

Definitions

Noun

1. 1
   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.
2. 2
   any isomeric saturated hydrocarbon found in petroleum and used as a fuel and solvent wordnet
3. 3
   octane number

Synonyms

All synonyms

alcoholbenzinebriquetteburnablebutanecarbon

Etymology

From oct- + -ane.

Related phrases

high-octanelow-octanen-octaneoctane numberoctane ratingresearch octane numberiso octane

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.