uroporphyrinogen
noun
uro·por·phy·rin·ogen
| \ ˌyu̇r-ō-ˌpȯr-fə-ˈrin-ə-jən
\
\
Medical Definition of uroporphyrinogen
: any of several porphyrins that can be converted to uroporphyrins or to a precursor of coproporphyrins