Divinylenimine; a heterocyclic compound found in many biologically important substances. SYN: azole, imidole.
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pyr·role 'pi(ə)r-.ōl n 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
pyr·ro·lic pir-'ō-lik adj
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pyr·role (pir-ōlґ) 1. a toxic, basic heterocyclic compound: It is used in the manufacture of pharmaceuticals. 2. a substituted derivative of this structure.
Medical dictionary. 2011.