hem·​er·​y·​thrin hē-ˈmer-ə-thrən How to pronounce hemerythrin (audio)
: an iron-containing respiratory pigment in the blood of various chiefly marine invertebrates (such as some brachiopods)

Examples of hemerythrin in a Sentence

Recent Examples on the Web Some worms use purplish hemerythrin; others use greenish chlorocruorin; some use a combination of pigments. Quanta Magazine, 22 Apr. 2019

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'hemerythrin.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History


hem- + erythr- + -in entry 1

First Known Use

1903, in the meaning defined above

Time Traveler
The first known use of hemerythrin was in 1903

Dictionary Entries Near hemerythrin

Cite this Entry

“Hemerythrin.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hemerythrin. Accessed 22 Sep. 2023.

Medical Definition


variants or chiefly British haemerythrin
: an iron-containing respiratory pigment in the blood of various invertebrates

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