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superior petrosal sinus

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n.
A paired sinus of the dura mater in the groove on the superior margin of the petrous part of the temporal bone, connecting the cavernous sinus with the transverse sinus.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

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