supra-oesophageal

from The Collaborative International Dictionary of English v.0.48

Supra-esophagal \Su`pra-e*soph"a*gal\, Supra-esophageal
\Su`pra-e`so*phag"e*al\, a. (Bot. & Zool.)
   Situated above, or on the dorsal side of, the esophagus; as,
   the supra-esophageal ganglion of Crustacea. [Written also
   {supra-oesophagal}, and {supra-oesophageal}.]
   [1913 Webster]