periost-
combining form 
or perioste- or periosteo-
Etymology: New Latin periosteum 
1. : periosteum 
< periosteomyelitis >
< periosteoma >
< periostitis >
2. : periosteal and 
< periosteoalveolar >
or perioste- or periosteo-
1.
< periosteomyelitis >
< periosteoma >
< periostitis >
2.
< periosteoalveolar >