名詞 porphyrin:

1. any of various pigments distributed widely in living tissues

por.phy.rin

n.（名詞）
Any of various nitrogen-containing organic compounds, derived from pyrrole, occurring universally in protoplasm and providing the foundation structure for hemoglobin, chlorophyll, and certain enzymes.
卟啉：一類含氧的有機化合物的一種，由卟咯衍生而來普遍存在于細胞質(zhì)中，是構(gòu)成血紅蛋白、呼吸色素及某些酶的基本結(jié)構(gòu)

來源：
Greek porphura [purple] * see purple
希臘語 porphura [紫色的] *參見 purple
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