pyrrole

noun

pyr·​role ˈpir-ˌōl 

: 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

pi-ˈrō-lik 

adjective

Examples of pyrrole in a Sentence

Recent Examples on the Web

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

Medical Definition

pyrrole

noun

pyr·​role ˈpi(ə)r-ˌōl 

: 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

pir-ˈō-lik 

adjective