etioporphyrin
noun
etio·por·phy·rin
variants
or chiefly British aetioporphyrin
: any of four isomeric porphyrins C32H38N4
especially
: a violet crystalline pigment occurring in nature (as in petroleum and coal) and formed by degradation of chlorophyll and of heme
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“Etioporphyrin.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/etioporphyrin. Accessed 30 Nov. 2024.
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