he路ma路to路por路phy路rin
| \ hi-藢ma-t蓹-藞p券r-f蓹-r蓹n
, 藢h膿-m蓹-t艒-\
: any of several isomeric porphyrins C34H38O6N4 that are hydrated derivatives of protoporphyrins
especially
: the deep red crystalline pigment obtained by treating hematin or heme with acid