Definify.com
Webster 1913 Edition
pyrrole
pyr′rol
,pyr′role
Noun.
[Gr. [GREEK] flame-colored (from [GREEK] fire) + L.
ol
eum oil.] (Chem.)
A nitrogenous heterocyclic base found in coal tar, bone oil, and other distillates of organic substances, and also produced synthetically as a colorless liquid,
C4H5N
, having on odor like that of chloroform. It is the nucleus and origin of a large number of derivatives. So called because it colors a splinter of wood moistened with hydrochloric acid a deep red. Definition 2024
pyrrole
pyrrole
English
Noun
pyrrole (plural pyrroles)
- (organic chemistry) Any of a class of aromatic heterocyclic compounds containing a ring of four carbon atoms and a nitrogen atom; especially the simplest one, C4H5N. [from 19th c.]
- 1998, Georgina Ferry, Dorothy Hodgkin: A Life:
- The way the red crystals absorbed light suggested that the molecule might contain a porphyrin-like structure, a flat ring made up of four smaller rings called pyrroles […].
- 1998, Georgina Ferry, Dorothy Hodgkin: A Life:
Derived terms
Translations
any of a class of aromatic heterocyclic compounds