The Collaborative International Dictionary
supra-oesophagal
Supra-esophagal \Su`pra-e*soph"a*gal\, Supra-esophageal \Su`pra-e`so*phag"e*al\, a. (Bot. & Zo["o]l.) Situated above, or on the dorsal side of, the esophagus; as, the supra-esophageal ganglion of Crustacea. [Written also supra-[oe]sophagal, and supra-[oe]sophageal.]
Wiktionary
supra-œsophagal
a. (obsolete spelling of supraesophageal English)