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
That's when the organization, with Meyer at the helm, began building its specialty programs, which now include heart, liver and kidney transplants, and a joint bone marrow transplant program with the Mayo Clinic.
—
Stephanie Innes, AZCentral.com, 9 July 2025
The Mayo Clinic defines leukemia as a cancer that affects a person’s blood-forming tissues, such as their bone marrow and lymphatic system.
—Hannah Dailey, Billboard, 2 July 2025
The doctor quickly scheduled me for a bone marrow biopsy and a panel of other tests.
—Julia Ries, Outside Online, 26 June 2025
Unique among vultures, lammergeiers primarily feed on bone marrow, often dropping large bones from great heights onto rocks to crack them open.
—Scott Travers, Forbes.com, 14 June 2025
See All Example Sentences for bone marrow
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Stephanie Innes, AZCentral.com, 9 July 2025
The Mayo Clinic defines leukemia as a cancer that affects a person’s blood-forming tissues, such as their bone marrow and lymphatic system.
—Hannah Dailey, Billboard, 2 July 2025
The doctor quickly scheduled me for a bone marrow biopsy and a panel of other tests.
—Julia Ries, Outside Online, 26 June 2025
Unique among vultures, lammergeiers primarily feed on bone marrow, often dropping large bones from great heights onto rocks to crack them open.
—Scott Travers, Forbes.com, 14 June 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 23 Jul. 2025.
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