The plural form of esophagus, referring to multiple esophagi (though humans only have one).
From Greek 'esophagos,' with the Latin plural form '-i' added, following the pattern of many medical and scientific terms borrowed from classical languages.
Using the Latin plural 'esophagi' instead of the English 'esophaguses' is a quirk of medical vocabulary that shows how much Latin and Greek still dominate in anatomy.
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