hemoglobin S


Definition of hemoglobin S

: 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 example sentences are selected automatically from various online news sources to reflect current usage of the word 'hemoglobin S.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of hemoglobin S

1954, in the meaning defined above

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The first known use of hemoglobin S was in 1954

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Cite this Entry

“Hemoglobin S.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hemoglobin%20S. Accessed 7 Jul. 2022.

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More Definitions for hemoglobin S

hemoglobin S


Medical Definition of hemoglobin S

: 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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