bone marrow

noun

Definition of bone marrow

: 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

And sickle cell does not recur in patients who get bone marrow transplants that allow them to make healthy blood cells—which is currently the only way to cure the disease but is available to only a small minority of people. Karen Weintraub, Scientific American, "Despite Controversy, Human Studies of CRISPR Move Forward in the U.S.," 13 Aug. 2019 Our top story today comes from USC, where offensive lineman Austin Jackson has rejoined the team after donating bone marrow to his little sister, who suffers from a rare genetic disorder. Jon Wilner, The Mercury News, "Hotline newsletter: Top basketball prospects in class of 2020 considering Pac-12 programs," 7 Aug. 2019 Nelson underwent the procedure to donate bone marrow at Hackensack University Medical Center in New Jersey on February 18 to help an anonymous 14-year-old boy suffering from cancer in France. Monica Haider, CNN, "Family sues after high school principal dies from donating bone marrow to save a boy," 23 July 2019 The fiancé of a New Jersey high school principal who died while donating bone marrow to a French teen he had never met filed a lawsuit on Monday that names the hospital where the procedure was performed. Fox News, "Fiancé of principal who died after donating bone marrow sues New Jersey hospital," 22 July 2019 Two Vietnamese brothers who were denied temporary visas to donate bone marrow to their dying brother in San Jose may get a second chance to travel to the United States. Tatiana Sanchez, SFChronicle.com, "Vietnamese brothers of dying San Jose man may get a second chance to come to U.S.," 14 June 2019 Ross said, adding that her son, who was seven at the time, was the only bone marrow match. Steve Smith, Courant Community, "RockaTHON Event A Success," 14 Mar. 2018 Chronic lymphocytic leukemia, or CLL, is typically a slow-growing cancer in which immature white blood cells multiply in the bone marrow and spread throughout the body. Michael Nedelman, CNN, "Chemo-free drug combo shows 'dramatic' improvement against common leukemia in adults," 31 July 2019 Tu Le, 63, was diagnosed in January 2018 with Myelodysplastic syndrome, which occurs when the blood-forming cells in the bone marrow become abnormal. Tatiana Sanchez, SFChronicle.com, "Vietnamese men denied visas for life-saving transplant for brother in San Jose," 7 June 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'bone marrow.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of bone marrow

1590, in the meaning defined above

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Dictionary Entries near bone marrow

bone-in

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Bonellia

bone marrow

bonemeal

bone oil

bone phosphate

Statistics for bone marrow

Last Updated

18 Aug 2019

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Time Traveler for bone marrow

The first known use of bone marrow was in 1590

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More Definitions for bone marrow

bone marrow

noun

English Language Learners Definition of bone marrow

: a soft substance that fills the bones of people and animals

bone marrow

noun

Kids Definition of bone marrow

: a soft tissue rich in blood vessels that fills the spaces of most bones and includes one type that is red and produces red blood cells and white blood cells and another type that is yellow and contains fat

bone marrow

noun

Medical Definition of bone marrow

: a soft highly vascular modified connective tissue that occupies the cavities and cancellous part of most bones and occurs in two forms:
a : a whitish or yellowish bone marrow that consists chiefly of fat cells and is found especially in the cavities of the long bones

called also yellow marrow

b : a reddish bone marrow that contains little fat, is the chief site of red blood cell and blood granulocyte formation, and occurs in the normal adult in cancellous tissue especially of certain flat bones

called also red marrow

More from Merriam-Webster on bone marrow

Rhyming Dictionary: Words that rhyme with bone marrow

Britannica.com: Encyclopedia article about bone marrow

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