pyrrole

noun

pyr·​role ˈpir-ˌōl How to pronounce pyrrole (audio)
: a toxic liquid heterocyclic compound C4H5N that has a ring consisting of four carbon atoms and one nitrogen atom, polymerizes readily in air, and is the parent compound of many biologically important substances (such as bile pigments, porphyrins, and chlorophyll)
broadly : a derivative of pyrrole
pyrrolic adjective

Examples of pyrrole in a Sentence

Recent Examples on the Web
These examples are automatically compiled from online sources to illustrate current usage. Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
Because of the way the sensor works, it can be adapted to detect pyrrole, a compound found in marijuana. Teresa Nowakowski, Smithsonian Magazine, 24 Apr. 2023 Researchers were able to contest the authenticity of the works by proving pigments used in the paintings, like the lightfast pyrrole red, PR 254, had not even been discovered until after Pollock’s death in 1956. Jackie Mansky, Smithsonian, 14 Mar. 2018

Word History

Etymology

Greek pyrrhos

First Known Use

1835, in the meaning defined above

Time Traveler
The first known use of pyrrole was in 1835

Dictionary Entries Near pyrrole

Cite this Entry

“Pyrrole.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/pyrrole. Accessed 9 Nov. 2024.

Medical Definition

pyrrole

noun
pyr·​role ˈpi(ə)r-ˌōl How to pronounce pyrrole (audio)
: a toxic liquid heterocyclic compound C4H5N that has a ring consisting of four carbon atoms and one nitrogen atom, polymerizes readily in air, and is the parent compound of many biologically important substances (as bile pigments, porphyrins, and chlorophyll)
broadly : a derivative of pyrrole
pyrrolic adjective

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