pyrrole

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pyrrole

 [pir´ōl]
a basic, cyclic substance, obtained by destructive distillation of various animal substances.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

pyr·role

(pir'ōl),
Divinylenimine; a heterocyclic compound found in many biologically important substances, for example, heme.
Synonym(s): azole, imidole
Farlex Partner Medical Dictionary © Farlex 2012

pyrrole

(pîr′ōl′)
n.
1. A five-membered heterocyclic ring compound, C4H5N, having an odor similar to chloroform, that is the parent compound of protoporphyrin.
2. Any of various derivatives of this compound.

pyr·ro′lic (pĭ-rō′lĭk) adj.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

pyr·role

(pir'ōl)
A heterocyclic compound found in many biologically important substances.
Synonym(s): azole, imidole.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

pyrrole

a porphyrin building block that has a five-membered heterocyclic structure and contains nitrogen.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005