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| eu·sta·chian tube [ yoo stáysh'n tb ] (plural eu·sta·chian tubes) or Eu·sta·chian tube [ yoo stáysh'n tb ] (plural Eu·sta·chian tubes) |
noun |
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| Definition: |
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passage equalizing air pressure in ear: a bony passage extending from the middle ear to the nasopharynx that has a role in equalizing air pressure on both sides of the eardrum
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| [Mid-18th century. After Bartolomeo Eustachio (1520-1574), Italian anatomist] |
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