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

Four-year-old Alexandria Cresci is miles away at Seattle Children’s Hospital but is kept close to the heart of Ramona relatives who wait for her bone marrow and thymus transplants. Julie Gallant, Ramona Sentinel, "Family stays by side of 4-year-old awaiting transplants," 12 June 2018 More than 19 million people across the globe have registered to be bone marrow donors, but not one of them is a perfect fit for Kalea Ramos of Chula Vista. Paul Sisson, sandiegouniontribune.com, "Can you help six-year-old Kalea Ramos beat leukemia?," 29 May 2018 Don’t miss the bone marrow with bacon jam or the fries cooked in beef tallow. Kate Washington, sacbee, "With a Burning Man vibe, Backbone Café taps into the current 'clean-eating' craze," 27 Apr. 2018 Balancing the donor’s bone marrow with the recipient’s allows the patient to take only one low-dose medication a day instead of the three typically taken by transplant patients, Brandacher said. Karen Weintraub, USA TODAY, "U.S. military veteran receives world's first total penis and scrotum transplant," 23 Apr. 2018 Maddie's sister, Sarah, donated bone marrow to save Grant's niece. Special To Al.com, AL.com, "Erin Cobb Photography goes from hobby to award winner," 25 Mar. 2018 Bach came up with a test that identified the family member who would be the closest match for a bone marrow recipient. Mark Johnson, Milwaukee Journal Sentinel, "UW scientific advances include vitamins, growing human embryonic stem cells in lab," 12 July 2018 The video of a 7-year-old Utah girl meeting the National Guard veteran who donated bone marrow years ago that saved her life went viral. Fox News, "Girl, 7, meets National Guard veteran who donated bone marrow that saved her life," 10 July 2018 The patient’s own plasma and bone marrow are used to aid healing. Trihealth, Cincinnati.com, "Don’t shoulder the pain," 10 July 2018

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

1850, in the meaning defined above

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Dictionary Entries near bone marrow

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Statistics for bone marrow

Last Updated

29 Sep 2018

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Time Traveler for bone marrow

The first known use of bone marrow was in 1850

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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

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