Akademik

extradural
1. On the outer side of the dura mater. 2. Unconnected with the dura mater.

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ex·tra·du·ral -'d(y)u̇r-əl adj situated or occurring outside the dura mater but within the skull <an \extradural hemorrhage>

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adj.
see epidural

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ex·tra·du·ral (eks″trə-dooґrəl) situated or occurring outside the dura mater.

Medical dictionary. 2011.