osteocranium
noun
os·teo·cra·ni·um
| \ -ˈkrā-nē-əm
\
\
plural osteocraniums
or osteocrania\ -nē-ə
\
\
Medical Definition of osteocranium
: the bony cranium
especially
: the parts of the cranium that arise in membrane bone — compare chondrocranium