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Medical Term:


Pronunciation: ma'ro


  1. A highly cellular hemopoietic connective tissue filling the medullary cavities and spongy epiphyses of bones; it becomes predominantly fatty with age, particularly in the long bones of the limbs.
  2. Any soft gelatinous or fatty material resembling the marrow of bone.

[A.S. mearh]

See Also: medulla

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