pterygoid process of sphenoid bone
a long process extending downward from the junction of the body and greater wing of the sphenoid bone on either side; it is formed of two plates (lateral and medial), united anteriorly but separated below to form the pterygoid notch; the pterygoid fossa is formed by the divergence of these two plates posteriorly.
Synonym(s): processus pterygoideus ossis sphenoidalisTA, os pterygoideum
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