periosteum

American

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

noun

Anatomy.

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.

periosteum British

/ ˌpɛrɪˈɒstɪəm /

noun

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

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Derived Forms

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-

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Human Anatomy and Physiology - High School

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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023