from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. The soft, fatty, vascular tissue that fills most bone cavities and is the source of red blood cells and many white blood cells.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. The fatty vascular tissue that fills the cavities of bones; the place where new blood cells are produced.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. very tender and very nutritious tissue from marrowbones
  • n. the fatty network of connective tissue that fills the cavities of bones


Sorry, no etymologies found.


  • From the bone marrow they move to the thymus, a butterfly-shaped organ situated over the heart in the center of the upper chest, right behind your sternum, or breastbone.

    The Autoimmune Epidemic

  • Luckily, the same defect that allows autoreactive T cells to escape from the bone marrow also results in a flaw on the surface of these T cells that allows them to be singled out and destroyed.

    The Autoimmune Epidemic

  • A couple of quick calls confirmed that Miss Harper had made periodic visits to Hopkins for blood and bone marrow workups, a routine relating to a disease she obviously had been quite secretive about.

    Body of Evidence

  • After a harrowing ride in a military helicopter to Walter Reed Hospital, three rounds of horrendous chemotherapy, an excruciating lung resection, and a disappointing bone marrow search, we were at Duke University Hospital.

    CSS: Christmas Cheer

  • Normally, our bone marrow and thymus produce millions of T cells, which are the foot soldiers that work diligently to serve the immune system.

    The Autoimmune Epidemic

  • When researchers placed bone marrow in mice that expressed additional copies of the Fc receptor gene, those mice did not develop autoimmune disease.

    The Autoimmune Epidemic

  • “She would come in every two months for her blood and bone marrow workups and on each visit was given a supply, about two hundred fifty two-milligram tablets,” Dr. Ismail was saying as he smoothed open the pages of a thick monitoring book.

    Body of Evidence

  • She is having bone marrow transplant, and keem … keem …

    The Kitchen Daughter

  • He had been in isolation for weeks, because the chemotherapy and drugs they used to make his new bone marrow engraft left him with no immune system.

    CSS: Christmas Cheer

  • The fact that Faustman was able to uncover and identify this specific group of flawed autoreactive T cells escaping out of the bone marrow was hugely promising.

    The Autoimmune Epidemic


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