a colourless insoluble toxic liquid having a five-membered ring containing one nitrogen atom, found in many naturally occurring compounds, such as chlorophyll. Formula: C4H5N
Also called: azole
Derived forms
pyrrolic (pɪˈrɒlɪk)
adjective
Word origin
C19: from Greek purrhos red, from pur fire +-ole1
pyrrole in American English
(ˈpɪroʊl; pɪˈroʊl)
noun
a colorless, pungent, slightly basic liquid, C4H5N, found in bile pigments, chlorophyll, and hematin, and obtained from coal tar, bone oil, etc.
Word origin
Ger pyrrol < Gr pyrrhos, fiery (< pyr, fire) + -ol, -ole