Relating to the endosteum.
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end·os·te·al en-'däs-tē-əl adj
1) of or relating to the endosteum
2) located within bone or cartilage
end·os·te·al·ly -ə-lē adv
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en·dos·te·al (en-dosґte-əl) 1. pertaining to the endosteum. 2. occurring or located within a bone.Medical dictionary. 2011.