periosteum

American  

[per-ee-os-tee-uhm] / ˌpɛr iˈɒs ti əm /

noun

Anatomy.

periostea plural

1. the normal investment of bone, consisting of a dense, fibrous outer layer, to which muscles attach, and a more delicate, inner layer capable of forming bone.

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periosteum British  

/ ˌpɛrɪˈɒstɪəm /

noun

1. a thick fibrous two-layered membrane covering the surface of bones

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Other Word Forms

Derived Forms

• subperiosteally
  adverb
• periosteal
  adjective
• periosteous
  adjective
• subperiosteal
  adjective
• periosteally
  adverb

Inflected Forms

noun

• periostea
  plural

Etymology

Origin of periosteum

1590–1600; < New Latin, variant of Late Latin periosteon, noun use of neuter of Greek periósteos around the bones. See peri-, osteo-

Compare meaning

How does periosteum compare to similar and commonly confused words? Explore the most common comparisons:

• periosteum vs. endosteum
• perichondrium vs. periosteum

Example Sentences

The periosteum assists in attaching the bone to surrounding tissues, tendons, and ligaments.

From Textbooks • Jun. 9, 2022

Tendons and ligaments also attach to bones at the periosteum.

From Textbooks • Jun. 19, 2013

The external callus is produced by cells in the periosteum and consists of hyaline cartilage and bone.

From Textbooks • Jun. 19, 2013

Immature osteogenic cells are found in the deep layers of the periosteum and the marrow.

From Textbooks • Jun. 19, 2013

Tenderness of the periosteum of the long bones and a peculiar roughness of their surfaces often exist also.

From A System of Practical Medicine by American Authors, Vol. I Volume 1: Pathology and General Diseases by Various