释义 |
etio·porphyrin noun or ae·tio·porphyrin \|ē]d.ē(ˌ)ō also |e]+\ Etymology: etio-, aetio- + porphyrin : any of four isomeric porphyrins C20H6N4(CH3)4(C2H5)4; especially : a violet crystalline pigment occurring in nature (as in petroleum and coal) and formed by degradation of chlorophyll and of heme |