hemoglobin S

noun

: an abnormal hemoglobin that occurs in the red blood cells in sickle cell anemia and sickle-cell trait

Examples of hemoglobin S in a Sentence

Recent Examples on the Web The result is hemoglobin S—a misshapen version that causes red blood cells to sickle. Dhruv Khullar, The New Yorker, 22 Mar. 2022 But hemoglobin S congeals into taut strands, making the blood cells that carry it fragile and rigid, as though a balloon were filled with shards of ice. Dhruv Khullar, The New Yorker, 22 Mar. 2022

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

Word History

First Known Use

1954, in the meaning defined above

Time Traveler
The first known use of hemoglobin S was in 1954

Dictionary Entries Near hemoglobin S

Cite this Entry

“Hemoglobin S.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hemoglobin%20S. Accessed 1 Oct. 2023.

Medical Definition

hemoglobin S

noun
: an abnormal hemoglobin occurring in the red blood cells in sickle cell anemia and sickle-cell trait and differing from hemoglobin A in having a valine residue substituted for the glutamic-acid residue in position 6 of two of the four polypeptide chains making up the hemoglobin molecule

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