red blood cell
noun
variants
or less commonly red blood corpuscle
or red cell
or red corpuscle
: any of the hemoglobin-containing cells that carry oxygen to the tissues and in mammals are typically biconcave disks which lack a nucleus and cellular organelles and are formed from nucleated cells of the red bone marrow
Note: The number of red blood cells ranges from four to six million in each cubic millimeter of normal human blood. The red color of blood is due to the presence of hemoglobin within the red blood cells.
called also erythrocyte
compare white blood cellExamples of red blood cell in a Sentence
Recent Examples on the Web
Mounting a rapid response DeStefano called for medications to try to keep Torres' blood pressure up, a rapid infuser and blood products, which included red blood cells, fresh frozen plasma, platelets, cryoprecipitate and fibrinogen to increase the ability for her blood to clot.
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Nicole Villalpando, Austin American Statesman, 4 Jan. 2026
The magic ingredient in ESM is carbonic anhydrase, an enzyme found in human red blood cells that helps us exhale carbon dioxide.
—Mrigakshi Dixit, Interesting Engineering, 30 Dec. 2025
Low iron leads to fewer red blood cells and reduced oxygen delivery.
—Merve Ceylan, Health, 28 Dec. 2025
Some of the tiny complex structures printed so far have included a honeycomb, a maple leaf, and bioscaffolds that encapsulate cancer cells and red blood cells.
—New Atlas, 27 Dec. 2025
See All Example Sentences for red blood cell
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Nicole Villalpando, Austin American Statesman, 4 Jan. 2026
The magic ingredient in ESM is carbonic anhydrase, an enzyme found in human red blood cells that helps us exhale carbon dioxide.
—Mrigakshi Dixit, Interesting Engineering, 30 Dec. 2025
Low iron leads to fewer red blood cells and reduced oxygen delivery.
—Merve Ceylan, Health, 28 Dec. 2025
Some of the tiny complex structures printed so far have included a honeycomb, a maple leaf, and bioscaffolds that encapsulate cancer cells and red blood cells.
—New Atlas, 27 Dec. 2025
See All Example Sentences for red blood cell
Cite this Entry
“Red blood cell.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/red%20blood%20cell. Accessed 5 Jan. 2026.
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