endosteum

[en-dos-tee-uhm]

noun

Anatomy.

plural

endostea 

1. the membrane lining the medullary cavity of a bone.

endosteum

/ ɛnˈdɒstɪəm /

noun

1. a highly vascular membrane lining the marrow cavity of long bones, such as the femur and humerus

Other Word Forms

• endosteal adjective

Word History and Origins

Origin of endosteum¹

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

Word History and Origins

Origin of endosteum¹

C19: New Latin, from _endo- + Greek osteon bone

Example Sentences

The Membranes of the Brain.—The dura mater is a fibro-serous membrane, the outer, fibrous layer constituting the endosteum of the skull, the inner, serous layer forming one of the coverings of the brain.

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