intermaxillary

adjective
in·​ter·​max·​il·​lary | \ ˌint-ər-ˈmak-sə-ˌler-ē, chiefly British -mak-ˈsil-ə-rē\

Medical Definition of intermaxillary

 (Entry 1 of 2)

1 : lying between maxillae especially : joining the two maxillary bones intermaxillary sutures
2 : of or relating to the premaxillae