octane

noun

oc·​tane ˈäk-ˌtān How to pronounce octane (audio)
1
: any of several isomeric liquid alkanes C8H18
2

Examples of octane in a Sentence

an octane rating of 90
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Written and directed by Tina Landau, Redwood tells the story of Jesse, who after suffering a devastating trauma, escapes her high octane life in New York in search of some kind of salve. Jeryl Brunner, Forbes, 18 Mar. 2025 Lopez has been spending a lot of time in New York lately, and her outfits have ranged from casual and comfortable looks to the highest octane slays, and sometimes even both at the same time. Aamina Inayat Khan, StyleCaster, 17 Apr. 2025 Perhaps nobody is a bigger fan of the archive pull than Zendaya, whose Dune: Part Two and Challenger promotions were loaded with only the highest octane fashion. Hannah Jackson, Vogue, 27 Mar. 2025 The Oilers are more of a high octane offence than Andersson’s Flames, so his number could increase if he’s shipped up the Queen Elizabeth II highway. Dream on The idea that Conroy would send Andersson to Edmonton at the deadline has some problems. Allan Mitchell, The Athletic, 15 Jan. 2025 But the variant is still pretty quick without the add-ons, able to hit 60 mph in 2.5 seconds and cover the quarter-mile in 9.7 seconds at 152 mph on 93 octane pump fuel. Bryan Hood, Robb Report, 20 Dec. 2024 Given the relentless pace of the racing calendar and the intense time pressure when cars are on the track, the job is high octane. IEEE Spectrum, 24 June 2024 But as the capital city and, importantly, as the center of the country’s high octane media industry, Delhi’s symbolic significance is highly disproportional to its actual political consequence. Milan Vaishnav, Foreign Affairs, 11 Feb. 2015 If your vehicle isn’t designed to run on higher octane fuels, then filling it with a higher octane fuel won’t necessarily result in more power or economy since the grade of fuel doesn’t impact the engine’s programming. Logan Carter / Jalopnik, Quartz, 27 Mar. 2024

Word History

Etymology

International Scientific Vocabulary

First Known Use

1867, in the meaning defined at sense 1

Time Traveler
The first known use of octane was in 1867

Browse Nearby Words

Cite this Entry

“Octane.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/octane. Accessed 20 May. 2025.

Kids Definition

octane

noun
oc·​tane ˈäk-ˌtān How to pronounce octane (audio)
1
: any of several liquid chemical compounds containing 8 carbon atoms and 18 hydrogen atoms
2
: a number that is used to measure the antiknock characteristics of gasoline with a higher number indicating a smaller chance of knocking

More from Merriam-Webster on octane

Last Updated: - Updated example sentences
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