# olefin

> English word · Noun · IPA /ˈəʊləfɪn/ · frequency rank #78,891

## Definitions
1. Any of a class of unsaturated open-chain hydrocarbons such as ethylene; an alkene with only one carbon-carbon double bond.

## Etymology
From olefiant, "oil-producing".

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/olefin