Cortical substance

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(anatomy) The outermost or superficial layer of an internal organ or body structure, such as kidney or brain.

(osteology) The osseous tissue that forms the outermost layer of bones.


Word origin: cortical: L. cortex bark: cf. F. cortical.

Synonym: compact bone, cortical substance, substantia corticalis.
Compare: cancellous bone.
See also: osseous tissue.