hemerythrin
noun
hem·er·y·thrin
hē-ˈmer-ə-thrən 
: an iron-containing respiratory pigment in the blood of various chiefly marine invertebrates (such as some brachiopods)
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Some worms use purplish hemerythrin; others use greenish chlorocruorin; some use a combination of pigments.
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Quanta Magazine, 22 Apr. 2019
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Quanta Magazine, 22 Apr. 2019
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“Hemerythrin.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hemerythrin. Accessed 31 Oct. 2025.
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hemerythrin
noun
he·me·ryth·rin
variants
or chiefly British haemerythrin
: an iron-containing respiratory pigment in the blood of various invertebrates
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