Marrow definition

mărō
The soft, vascular, fatty tissue that fills the cavities of most bones.
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Marrow is defined as an innermost, choice part, especially the fatty tissue inside bones.

An example of marrow is the substance in bones that can be donated to a sick person in need of a blood marrow transfusion.

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Bone marrow.
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The innermost, essential, or choicest part; pith.
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Vitality.
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(uncountable) The substance inside bones which produces blood cells.
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The inmost, choicest, or essential part; the pith.
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Strength or vigor; vitality.
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(countable) A kind of vegetable like a large courgette/zucchini or squash.
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The essence; the best part.
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(Scotland) One of a pair; a match; a companion; an intimate associate.
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(Geordie, informal) A friend, pal, buddy, mate.

Cheers marrow!

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The spinal cord.
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The spinal cord.
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The marrow squash.
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Bone marrow.
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Other Word Forms

Noun

Singular:
marrow
Plural:
marrows

Origin of marrow

  • Middle English marow from Old English mearg

    From American Heritage Dictionary of the English Language, 5th Edition

  • Middle English mary, marow, marowe, marowȝ, from Old English mearg, from Proto-Germanic *mazgą, *mazgaz, from Proto-Indo-European *mozgos. See Dutch merg and Russian мозг ("brain").

    From Wiktionary

  • From Old Norse margr.

    From Wiktionary

Marrow Sentence Examples

  • This call is immediately answered by an active proliferation and steady maturing of the myclocytes in the marrow to form the polymorpho-nuclear leucocytes.

  • The "Marrow men" were marked by the zeal of their service and the effect of their preaching.

  • In a bone marrow biopsy, a slightly larger needle is used.

  • It is largely to researches on the bone marrow that we owe our present knowledge of the origin and the classification of the different cellular elements of the blood, both erythrocytes or red corpuscles, and the series of granular leucocytes or white corpuscles.

  • The healthy bone marrow reacts with remarkable rapidity to the demand for more blood cells which may be required by the organism; its reactions and variations in disease are very striking.

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Words near marrow in the Dictionary