Definition of mucoperiosteum in US English:

mucoperiosteum

noun

Anatomy Medicine
  • A mucous membrane apposed to a periosteum, as in the hard palate.

Origin

Early 20th century; earliest use found in William Dorland (1864–1956), obstetrician. From muco- + periosteum.

Pronunciation

mucoperiosteum

/ˌmjuːkəʊˌpɛrɪˈɒstɪəm/