n 1  :  the upper and smaller of the two sensory ganglia of the glossopharyngeal nerve that may be absent but when present is situated in a groove in which the nerve passes through the jugular foramen - called also jugular ganglion  - compare INFERIOR GANGLION1    2  :  the upper of the two ganglia of the vagus nerve that is situated at the point where it exits through the jugular foramen - called also jugular ganglion , uperior vagal ganglion  - compare INFERIOR GANGLION2   .
 
 
 
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