bone marrow

American  

noun

1. marrow.

---

bone marrow British  

noun

1. See marrow 1

---

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.

---

bone marrow Cultural  

1. See marrow.

---

Example Sentences

See Examples For:

bone marrow

Leukemia is a cancer of the blood that begins in the bone marrow, which varies based on the type of blood cell affected and the stage of the disease.

From Los Angeles Times ● Jul. 23, 2026

As the name suggests, steak is the main event, with options ranging from dry-aged ribeyes and picanha to A5 Wagyu New York strip, plus add-ons like roasted bone marrow and curry béarnaise.

From Salon ● Jun. 11, 2026

Caitlin was then scheduled for monthly bone marrow monitoring for three months, to check that the cancer had not returned.

From BBC ● Jun. 9, 2026

Scientists have uncovered an unexpected way the immune system can attack cancer, a finding that challenges a long-standing principle in immunology and could lead to new approaches for cancer treatment and bone marrow transplantation.

From Science Daily ● Jun. 4, 2026

I could touch the stones the old woman wore—its bone marrow.

From "The Woman Warrior" by Maxine Hong Kingston