Dictionary.com
Thesaurus.com

olefin

American  
[oh-luh-fin] / ˈoʊ lə fɪn /
Also olefine

noun

Chemistry.
  1. any member of the alkene series.


olefin Scientific  
/ ōlə-fĭn /
  1. See alkene


Other Word Forms

  • olefinic adjective

Etymology

Origin of olefin

1855–60; < French oléf ( iant ) ( olefiant gas ) + -in 2

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

He cuts the company’s 2026-2027 earnings forecasts by 55%-58% on lower olefin price assumptions and weaker projected Ebitda margins.

From The Wall Street Journal

No one looked at what happens if the olefin reacts with ozone instead of hydroxyl radicals, he says.

From Science Magazine

The profit crunch is being driven by China's refiners boosting output of olefins such as ethylene to offset an expected decline in sales of petrol and diesel as electric vehicle take-up accelerates.

From Reuters

The fire had started at plant’s olefins unit, which makes plastics and rubber.

From Seattle Times

The fire started while the olefins unit was undergoing routine maintenance.

From Seattle Times