e·soph·a·gus also oe·soph·a·gus (ĭ-sŏfə-gəs)
n. pl. e·soph·a·gi (-jī′, -gī′) also oe·soph·a·gi
The muscular tube by which food passes from the pharynx to the stomach; the gullet.
[Middle English isophagus, from Medieval Latin ēsophagus, from Greek oisophagos, arbitrary medical coinage perhaps from ois- : future tense stem of pherein, to carry; see oit- in the Appendix of Indo-European roots + -phagos, food (unattested sense) (from phagein, to eat; see bhag- in the Appendix of Indo-European roots).]
e·soph′a·geal (-jēəl) adj.
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2019 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.