Main Entry: ep·en·dy·ma Pronunciation: ep-'en-d&-m& Function: noun : an epithelial membrane lining the ventricles of the brainand the canal of the spinal cord —ep·en·dy·mal/(')ep-'en-d&-m&l/adjective
ependyma ep·en·dy·ma (ĭ-pěn'də-mə) n.pl.ep·en·dy·mas or ep·en·dy·ma·ta (-mə-tə) The epithelial membrane lining the canal of the spinal cord and the ventricles of the brain.