Source : Webster's Revised Unabridged Dictionary (1913)

Circumesophagal \Cir`cum*e*soph"a*gal\, a. [Pref. circum +
   esophagal.] (Anat.)
   Surrounding the esophagus; -- in Zool. said of the nerve
   commissures and ganglia of arthropods and mollusks.