Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

cetane number

noun

Definition of cetane number

  1. :  a measure of the ignition value of a diesel fuel that represents the percentage by volume of cetane in a mixture of liquid methylnaphthalene that gives the same ignition lag as the oil being tested —called also cetane rating — compare octane number



1935

First Known Use of cetane number

1935


Seen and Heard

What made you want to look up cetane number? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

a feeling of fear that causes hesitation

Get Word of the Day daily email!