cetane number

noun

Definition of cetane number

: 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

First Known Use of cetane number

1935, in the meaning defined above

Keep scrolling for more

Learn More About cetane number

Time Traveler for cetane number

Time Traveler

The first known use of cetane number was in 1935

See more words from the same year

Dictionary Entries Near cetane number

Cetacea

cetacean

cetane

cetane number

cete

Cete

cetene

See More Nearby Entries 

Statistics for cetane number

Cite this Entry

“Cetane number.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/cetane%20number. Accessed 24 Jun. 2021.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

WORD OF THE DAY

Test Your Vocabulary

Return of Name that Color!

  • a light greenish blue color
  • Name that color:
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

TAKE THE QUIZ
Universal Daily Crossword

A daily challenge for crossword fanatics.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!