Beneath the dura mater or between it and the arachnoid. See spatium subdurale.
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sub·du·ral .səb-'d(y)u̇r-əl adj situated, occurring, or performed under the dura mater or between the dura mater and the arachnoid <\subdural hematoma>
sub·du·ral·ly -ē adv
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adj.
below the dura mater (the outermost of the meninges); relating to the space between the dura mater and arachnoid. See also haematoma.
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sub·du·ral (səb-dooґrəl) between the dura mater and the arachnoid.Medical dictionary. 2011.