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[en-dos-tee-uh m] /ɛnˈdɒs ti əm/
noun, plural endostea
[en-dos-tee-uh] /ɛnˈdɒs ti ə/ (Show IPA).
the membrane lining the medullary cavity of a bone.
Origin of endosteum
1880-85; end- + New Latin osteum < Greek ostéon bone
Related forms
endosteal, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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British Dictionary definitions for endosteum


noun (pl) -tea (-tɪə)
a highly vascular membrane lining the marrow cavity of long bones, such as the femur and humerus
Derived Forms
endosteal, adjective
Word Origin
C19: New Latin, from endo- + Greek 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
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endosteum in Medicine

endosteum en·dos·te·um (ěn-dŏs'tē-əm)
n. pl. en·dos·te·a (-tē-ə)
The thin layer of cells lining the medullary cavity of a bone. Also called medullary membrane.

en·dos'te·al adj.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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