pyrrole

noun
pyr·​role | \ ˈpir-ˌōl How to pronounce pyrrole (audio) \

Definition of pyrrole

: 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

Other Words from pyrrole

pyrrolic \ pi-​ˈrō-​lik How to pronounce pyrrole (audio) \ adjective

Examples of pyrrole in a Sentence

Recent Examples on the Web 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

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'pyrrole.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of pyrrole

1835, in the meaning defined above

History and Etymology for pyrrole

Greek pyrrhos

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Time Traveler for pyrrole

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The first known use of pyrrole was in 1835

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Dictionary Entries Near pyrrole

pyrrol-

pyrrole

pyrrolidone

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Cite this Entry

“Pyrrole.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/pyrrole. Accessed 30 Jun. 2022.

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More Definitions for pyrrole

pyrrole

noun
pyr·​role | \ ˈpi(ə)r-ˌōl How to pronounce pyrrole (audio) \

Medical Definition of pyrrole

: 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

Other Words from pyrrole

pyrrolic \ pir-​ˈō-​lik How to pronounce pyrrole (audio) \ adjective

More from Merriam-Webster on pyrrole

Britannica.com: Encyclopedia article about pyrrole

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