definition of periosteum
Definition of periosteum. plural. -tea. \-tÄ-É\. : the membrane of connective tissue that closely invests all bones except at the articular surfaces.
periosteum - a dense fibrous membrane covering the surface of bones (except at their extremities) and serving as an attachment for tendons and muscles; contains nerves and blood vessels that nourish the enclosed bone. 1  cambium - the inner layer of the periosteum.