noun, plural per·i·os·te·a [per-ee-os-tee-uh] /ˌpɛr iˈɒs ti ə/. 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.
Origin of periosteum
1590–1600;Related formsper·i·os·te·al, per·i·os·te·ous, adjectiveper·i·os·te·al·ly, adverbsub·per·i·os·te·al, adjectivesub·per·i·os·te·al·ly, adverb
< New Latin,
variant of Late Latin periosteon,
noun use of neuter of Greek periósteos
around the bones. See peri-
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for periosteum
Historical Examples of periosteum
British Dictionary definitions for periosteum
noun plural -tea (-tɪə)
Derived Formsperiosteal, adjective
a thick fibrous two-layered membrane covering the surface of bones
Word Origin for periosteum
C16: New Latin, from Greek periosteon, from peri- + osteon bone
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
Word Origin and History for periosteum
1590s, from Modern Latin periosteum, Late Latin periosteon, from Greek periosteon, neuter of periosteos "round the bones," from peri- (see peri-) + osteon (see osseous).
Online Etymology Dictionary, © 2010 Douglas Harper
n. pl. per•i•os•te•a (-tē-ə)
Related formsper′i•os′te•al (-tē-əl) adj.
The thick fibrous membrane covering the entire surface of a bone except its articular cartilage and serving as an attachment for muscles and tendons.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.