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Meaning of periosteum

per•i•os•te•um

Pronunciation: (per"ē-os'tē-um), [key]
— pl. -te•a
  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.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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