amyelia
noun
amy·e·lia
| \ ˌā-(ˌ)mī-ˈē-lē-ə
, ˌam-(ˌ)ī-
, -ˈel-ē-ə\
, ˌam-(ˌ)ī-
, -ˈel-ē-ə\
Medical Definition of amyelia
: congenital absence of the spinal cord