Surrounding or encircling the esophagus (the tube that carries food to the stomach).
From circum- (around) and esophagus (from Greek oisophagus, 'eating tube'). This medical term describes anatomical position.
Certain parasitic worms have circumesophageal nerve rings that allow them to sense food moving down your throat—it's like having taste buds installed around the food's highway.
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