Definition of pyrrole in English:

pyrrole

noun

Chemistry
  • [mass noun] A weakly basic sweet-smelling liquid compound present in coal tar.

    • ‘This step is followed by polymerising pyrrole vapours to produce a foam composite.’
    • ‘The free-base form of such porphyrins contains two pyrrole nitrogens.’
    • ‘The Netropsin ligand consists of a guanidinium, two pyrrole, and a propylamidinium part.’
    • ‘This would make this particular pyrrole group unequivalent with the others.’

Origin

Mid 19th century: from Greek purrhos reddish + Latin oleum oil.

Pronunciation:

pyrrole

/ˈpɪrəʊl/