1. Of, relating to, or derived from the bone marrow.
2. Of or relating to certain blood cells, including granulocytes, monocytes, and sometimes erythrocytes and platelets but excluding lymphocytes, that are thought to derive from a common progenitor in the bone marrow.
3. Of or relating to the spinal cord.
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2018 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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