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

The researchers found no trace of the virus in samples of the man's blood, gut and bone marrow.

From Barron's • Apr. 13, 2026

The cancerous plasma cells produce large amounts of an abnormal antibody called M protein, which builds up in bone marrow and forms tumors in bones, like the one in my hip.

From Slate • Mar. 29, 2026

Slow-roasted bone marrow, branzino laced with herbs, the kind of flavors that made us lean in and feed each other.

From Los Angeles Times • Mar. 20, 2026

Birria gyoza arrived swimming in bone marrow consommé, delivering a concentrated hit of richness.

From Salon • Feb. 2, 2026

“The issue is not the legality of the bone marrow analysis,” Eldon Rosen said huskily.

From "Do Androids Dream of Electric Sheep?" by Philip K. Dick