filum terminale

noun
fi·​lum ter·​mi·​na·​le | \ ˈfī-ləm-ˌtər-mə-ˈnā-(ˌ)lē How to pronounce filum terminale (audio) , ˈfē-ləm-ˌter-mə-ˈnäl-ˌā How to pronounce filum terminale (audio) \
plural fila terminalia\ ˈfī-​lə-​tər-​mə-​ˈnā-​lē-​ə How to pronounce fila terminalia (audio) , ˈfē-​lə-​ˌter-​mə-​ˈnäl-​ē-​ə How to pronounce fila terminalia (audio) \

Medical Definition of filum terminale

: the slender threadlike prolongation of the spinal cord below the origin of the lumbar nerves : the last portion of the pia mater

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