Phrase guide

octane number

noun · 2 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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1

noun

Meaning 1

A measure of the antiknock properties of an automobile fuel.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: octane rating

Antonyms: none provided

2

noun

Meaning 2

a measure of the antiknock properties of gasoline

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: octane rating

Antonyms: none provided

Broader terms: measure, quantity, amount

History

Etymology

No etymology was provided for this word.

Across languages

Translations

15 source translations are retained for this English entry.

  • Danish: oktantal — measure of the antiknock properties of an automobile fuel
  • Finnish: oktaaniluku — measure of the antiknock properties of an automobile fuel
  • French: indice d'octane — measure of the antiknock properties of an automobile fuel
  • German: Oktanzahl — measure of the antiknock properties of an automobile fuel
  • Hungarian: oktánszám — measure of the antiknock properties of an automobile fuel
  • Italian: numero di ottano — measure of the antiknock properties of an automobile fuel
  • Kazakh: октан саны (oktan sany) — measure of the antiknock properties of an automobile fuel
  • Persian: عدد اکتان ('adad-e oktân) — measure of the antiknock properties of an automobile fuel
  • Polish: liczba oktanowa — measure of the antiknock properties of an automobile fuel
  • Portuguese: octanagem — measure of the antiknock properties of an automobile fuel
  • Romanian: cifră octanică — measure of the antiknock properties of an automobile fuel
  • Spanish: octanaje — measure of the antiknock properties of an automobile fuel
  • Spanish: índice de octano — measure of the antiknock properties of an automobile fuel
  • Swedish: oktantal — measure of the antiknock properties of an automobile fuel
  • Swedish: oktan — measure of the antiknock properties of an automobile fuel