Subesophageal \Sub*e`so*phag"e*al\, a. (Zo["o]l.) Situated beneath the esophagus. [Written also {sub[oe]sophageal}.] {Subesophageal ganglion} (Zo["o]l.), a large special ganglion situated beneath the esophagus of arthropods, annelids, and some other invertebrates.