- Produced by, or indicating, a cavity in the lungs, not
filled, and giving a sound like that produced by blowing into an empty
decanter; as, amphoric respiration or resonance.
Meaning of 'amphoric' (Princeton's WordNet)
1 . amphoric
[ a]
Meaning (1): - the sound heard in auscultation resembling the hollow sound made by blowing across the mouth of a bottle