Definitions for pyrrolepɪˈroʊl, ˈpɪr oʊl
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Random House Webster's College Dictionary
pyr•rolepɪˈroʊl, ˈpɪr oʊl(n.)
a colorless, toxic, liquid, five-membered ring compound, C4H5N, that is a component of chlorophyll and hemin.
Category: Chemistry
Origin of pyrrole:
1825–35; < Gk pyrr(hós) red
pyr•rol•icpɪˈrɒl ɪk, -ˈroʊ lɪk(adj.)
Wiktionary
pyrrole(Noun)
Any of a class of aromatic heterocyclic compounds containing a ring of four carbon atoms and a nitrogen atom; especially the simplest one, CHN.
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