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in·tra·med·ul·lary -'med-əl-.er-ē, -'mej-ə-.ler-ē; -mə-'dəl-ə-rē adj situated or occurring within a medulla <an \intramedullary tumor of the spinal cord> esp involving use of the marrow space of a bone for support <\intramedullary pinning of a fracture of the thigh>
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in·tra·med·ul·lary (in″trə-medґu-lar″e) 1. within the spinal cord. 2. within the medulla oblongata. 3. within the marrow cavity of a bone.Medical dictionary. 2011.