pyrrole
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
1Other words from pyrrole
- pyr·rol·ic [pi-rol-ik, -roh-lik], /pɪˈrɒl ɪk, -ˈroʊ lɪk/, adjective
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British Dictionary definitions for pyrrole
/ (ˈpɪrəʊl, pɪˈrəʊl) /
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
Origin of pyrrole
1Derived forms of pyrrole
- pyrrolic (pɪˈrɒlɪk), adjective
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Scientific definitions for 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.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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