bone marrow

American  

noun

1. marrow.

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bone marrow British  

noun

1. See marrow 1

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bone marrow Scientific  

1. The spongy, red tissue that fills the bone cavities of mammals. Bone marrow is the source of red blood cells, platelets, and most white blood cells.

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bone marrow Cultural  

1. See marrow.

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Example Sentences

See Examples For:

bone marrow

Researchers found that the modified immune cells also reached and eliminated disease-promoting B cells in deeper locations, including the bone marrow, lymph nodes, and joint tissue.

From Science Daily ● Aug. 30, 2026

Experts later determined she suffered from severe anemia; blood clots in both wings and one kidney; liver and lung abnormalities; and inadequate bone marrow response.

From Los Angeles Times ● Aug. 14, 2026

Despite a battery of tests, including a contrast CT scan and bone marrow biopsy, experts could not determine what was making Jackie critically ill.

From Los Angeles Times ● Aug. 10, 2026

Those cells are hematopoietic cells, meaning they are blood cells produced in bone marrow.

From Science Daily ● Aug. 5, 2026

Then I chew on the bones to get the flavor and bone marrow out.

From "First They Killed My Father: A Daughter of Cambodia Remembers" by Loung Ung