[ en-dos-tee-uh m ]
/ ɛnˈdɒs ti əm /

noun, plural en·dos·te·a [en-dos-tee-uh] /ɛnˈdɒs ti ə/. Anatomy.

the membrane lining the medullary cavity of a bone.

Origin of endosteum

1880–85; end- + New Latin osteum < Greek ostéon bone

Related forms

en·dos·te·al, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for endosteum


/ (ɛnˈdɒstɪəm) /

noun plural -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 for endosteum

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

Medicine definitions for endosteum


[ ĕn-dŏstē-əm ]

n. pl. en•dos•te•a (-tē-ə)

The thin layer of cells lining the medullary cavity of a bone.medullary membrane

Related forms

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