respiratory pigment

noun

: any of various permanently or intermittently colored conjugated proteins and especially hemoglobin that function in the transfer of oxygen in cellular respiration

Examples of respiratory pigment in a Sentence

Recent Examples on the Web
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Ocean temperatures can significantly influence how oxygen binds to respiratory pigments. Scott Travers, Forbes.com, 10 Jan. 2026

Word History

First Known Use

1888, in the meaning defined above

Time Traveler
The first known use of respiratory pigment was in 1888

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Cite this Entry

“Respiratory pigment.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/respiratory%20pigment. Accessed 2 Feb. 2026.

Medical Definition

respiratory pigment

noun
: any of various permanently or intermittently colored conjugated proteins and especially hemoglobin that function in the transfer of oxygen in cellular respiration

More from Merriam-Webster on respiratory pigment

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