[ ˌpɛrɪ'ɒstɪəm ]
■ noun ( plural periostea -tɪə ) Anatomy a dense layer of vascular connective tissue enveloping the bones except at the surfaces of the joints.
Derivatives
periosteal adjective
periostitis noun
Origin
C16: mod. L., from Gk periosteon , from peri- 'around' + osteon 'bone'.