diaphragma sellae
noun
di·a·phrag·ma sel·lae
| \ ˌdī-ə-ˈfrag-mə-ˈsel-ˌī
, -ˌē
\
, -ˌē
\
Medical Definition of diaphragma sellae
: a small horizontal fold of the dura mater that roofs over the sella turcica and contains a small opening for passage of the infundibulum