diastematomyelia
noun
di·a·ste·ma·to·my·e·lia
| \ ˌdī-ə-ˌstē-mət-ō-mī-ˈē-lē-ə
, -ˌstem-ət-
\
, -ˌstem-ət-
\
Medical Definition of diastematomyelia
: congenital division of all or part of the spinal cord