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
Iron is needed to produce hemoglobin, the protein in red blood cells that carries oxygen throughout the body.
—
Nancy Lebrun, Verywell Health, 6 Nov. 2025
Iron Iron is a crucial ingredient in hemoglobin, a red blood cell protein that helps move oxygen from the lungs to other cells in the body.
—Stephanie Anderson Witmer, Health, 5 Nov. 2025
Often referred to as a vampire facial, platelet-rich plasma (PRP) treatments involve drawing the client's blood, separating out the red blood cells and injecting the platelet-rich plasma back into the face with micro-needles.
—Emily Tannenbaum, Glamour, 25 Oct. 2025
The breakthrough detects hemolysis, or the breakdown of red blood cells, which can cause false potassium readings.
—Beth Warren, Nashville Tennessean, 22 Oct. 2025
See All Example Sentences for red blood cell
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Nancy Lebrun, Verywell Health, 6 Nov. 2025
Iron Iron is a crucial ingredient in hemoglobin, a red blood cell protein that helps move oxygen from the lungs to other cells in the body.
—Stephanie Anderson Witmer, Health, 5 Nov. 2025
Often referred to as a vampire facial, platelet-rich plasma (PRP) treatments involve drawing the client's blood, separating out the red blood cells and injecting the platelet-rich plasma back into the face with micro-needles.
—Emily Tannenbaum, Glamour, 25 Oct. 2025
The breakthrough detects hemolysis, or the breakdown of red blood cells, which can cause false potassium readings.
—Beth Warren, Nashville Tennessean, 22 Oct. 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 9 Nov. 2025.
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