Definition of porphobilinogen in US English:

porphobilinogen

noun

Biochemistry
  • A colourless, soluble, solid compound which is a metabolic precursor of porphyrins, is excreted in the commoner forms of porphyria, and is a substituted pyrrole; 5-aminomethyl-4-carboxymethyl-1H-pyrrole-3-propanoic acid, C₁₀H₁₄N₂O₄.

Origin

1930s; earliest use found in Chemical Abstracts. From German Porphobilinogen from Porphobilin + -ogen.

Pronunciation

porphobilinogen

/ˌpɔːfəʊbʌɪˈlɪnədʒ(ə)n/