bone marrow
noun
: a soft highly vascular modified connective tissue that occupies the cavities of most bones and occurs in two forms:
a
: one that is yellowish, consists chiefly of fat cells, and is found especially in the cavities of long bones
b
: one that is reddish, is the chief site of blood cell formation, and occurs in the normal adult in cancellous tissue especially of certain flat bones
called also red marrow
Examples of bone marrow in a Sentence
Recent Examples on the Web
In October, two sources told NBC News that Weinstein had been diagnosed with chronic myeloid leukemia, an uncommon form of bone marrow cancer.
—
Emily Berk, NBC news, 11 June 2025
For example, some patients with leukemia receive bone marrow transplants, which replace the diseased blood stem cells in the bone marrow with healthy ones.
—Lillian Ali, Smithsonian Magazine, 21 Apr. 2025
Weinstein, 73, has recently undergone treatment for bone marrow cancer, and last year received emergency heart surgery.
—Ilya Marritz, NPR, 15 Apr. 2025
Stem cell transplant: Also called a bone marrow transplant, this treatment replaces cancerous bone marrow cells with healthy donor cells.
—Health, 24 May 2025
See All Example Sentences for bone marrow
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Emily Berk, NBC news, 11 June 2025
For example, some patients with leukemia receive bone marrow transplants, which replace the diseased blood stem cells in the bone marrow with healthy ones.
—Lillian Ali, Smithsonian Magazine, 21 Apr. 2025
Weinstein, 73, has recently undergone treatment for bone marrow cancer, and last year received emergency heart surgery.
—Ilya Marritz, NPR, 15 Apr. 2025
Stem cell transplant: Also called a bone marrow transplant, this treatment replaces cancerous bone marrow cells with healthy donor cells.
—Health, 24 May 2025
See All Example Sentences for bone marrow
Cite this Entry
“Bone marrow.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/bone%20marrow. Accessed 17 Jun. 2025.
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