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Medical Definition of Plexus pterygoideus
1. A venous plexus occupying the infratemporal fossa receiving veins accompanying the branches of the maxillary artery, and terminating posteriorly in the maxillary vein; anteriorly the pterygoid plexus drains via the deep facial vein into the facial vein. Synonym: plexus pterygoideus. (05 Mar 2000)