pyrrole

[ pi-rohl, pir-ohl ]
/ pɪˈroʊl, ˈpɪr oʊl /

noun Chemistry.

a colorless, toxic, liquid, five-membered ring compound, C4H5N, that is a component of chlorophyll, hemin, and many other important naturally occurring substances.

Origin of pyrrole

1825–35; irregular < Greek pyrr(hós) red + -ole2

OTHER WORDS FROM pyrrole

pyr·rol·ic [pi-rol-ik, -roh-lik] /pɪˈrɒl ɪk, -ˈroʊ lɪk/, adjective

Words nearby pyrrole

pyrrho, pyrrhonism, pyrrhotite, pyrrhuloxia, pyrrhus, pyrrole, pyrrolidine, pyrrophyta, pyrrophyte, pyruvate, pyruvate kinase deficiency

Example sentences from the Web for pyrrole

British Dictionary definitions for pyrrole

pyrrole
/ (ˈpɪrəʊl, pɪˈrəʊl) /

noun

a colourless insoluble toxic liquid having a five-membered ring containing one nitrogen atom, found in many naturally occurring compounds, such as chlorophyll. Formula: C 4 H 5 N Also called: azole

Derived forms of pyrrole

pyrrolic (pɪˈrɒlɪk), adjective

Word Origin for pyrrole

C19: from Greek purrhos red, from pur fire + -ole 1

Medical definitions for pyrrole

pyrrole
[ pîr′ōl′ ]

n.

A five-membered heterocyclic ring compound that has an odor similar to chloroform and is the parent compound of hemoglobin, chlorophyll, and many other complex, biologically active substances. imidole

Other words from pyrrole

pyr•ro′lic (pĭ-rō′lĭk) adj.

Scientific definitions for pyrrole

pyrrole
[ pîr′ōl′ ]

Any of a class of organic compounds having a five-member ring composed of four carbon atoms and one nitrogen atom. The pyrrole ring structure is a component of many biologically important compounds, including porphyrins, alkaloids, and certain amino acids.
The simplest of this class of compounds, in which a single hydrogen atom is attached to each atom in the ring. It has a pleasant odor similar to that of chloroform. Chemical formula: C4H5N.