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Dictionary

pyr•role

Pronunciation: (pi-rōl', pir'ōl), [key]
—n. Chem.
a colorless, toxic, liquid, five-membered ring compound, C₄H₅N, that is a component of chlorophyll, hemin, and many other important naturally occurring substances.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

Pyrrhus

pyrrolidine

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