: a cyclic flammable liquid compound C4H4O that is obtained from wood oils of pines or made synthetically and is used especially in organic synthesis
also : any of various derivatives of furan

Examples of furan in a Sentence

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.
Modern bacteria are thought to use furans for cellular signaling. Byandrew Curry, science.org, 4 May 2023 Next, the team equipped modern Pseudomonas protegens bacteria with a pair of ancient genes to make proteins that produce milligrams’ worth of a molecule called a furan. Byandrew Curry, science.org, 4 May 2023

Word History

Etymology

International Scientific Vocabulary, from furfural

First Known Use

1894, in the meaning defined above

Time Traveler
The first known use of furan was in 1894

Browse Nearby Words

Cite this Entry

“Furan.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/furan. Accessed 25 Mar. 2025.

Medical Definition

: a flammable liquid C4H4O obtained from oils of pines or made synthetically and used especially in organic synthesis
also : a derivative of furan

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