Definition of porphyrinogen in US English:

porphyrinogen

noun

Chemistry
  • Any of a group of colourless compounds which are reduced derivatives of porphin (and metabolic precursors of porphyrins) in which the four pyrrole nuclei are linked by methylene groups, —CH₂—.

Origin

Early 20th century; earliest use found in Journal of the Chemical Society. From porphyrin + -ogen, after German Porphyrinogen.

Pronunciation

porphyrinogen

/ˌpɔːfɪˈrɪnədʒ(ə)n/