Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “octane number”

See all translations

octane number

noun [C] uk   ( also octane rating) us  
a number showing the quality of petrol by representing how well and with how much power it can make an engine work
Translations of “octane number”
in Chinese (Traditional) 辛烷值…
in Chinese (Simplified) 辛烷值…
(Definition of octane number from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of octane number?
Add Cambridge dictionaries to your browser to your website

Word of the Day

guru

a religious leader or teacher in the Hindu or Sikh religion

Word of the Day

The way we move (Verbs for walking and running)

by Kate Woodford,
March 25, 2015
​​​ This week we’re looking at interesting ways to describe the way that people move. Most of the verbs that we’ll be considering describe how fast or slow people move. Others describe the attitude or state of mind of the person walking or running. Some describe both. Starting with verbs for walking slowly,

Read More 

crossfit noun

March 23, 2015
high-intensity strength training Two women in strappy dresses discussed how much weight they could snatch

Read More