extramedullary
adjective
ex·tra·med·ul·lary
| \ -ˈmed-ᵊl-ˌer-ē, -ˈmej-ə-ˌler-ē, -mə-ˈdəl-ə-rē
\
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Medical Definition of extramedullary
1
: situated or occurring outside the spinal cord or the medulla oblongata
2
: located or taking place outside the bone marrow
extramedullary hematopoiesis