What is 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 called?

amphoric — 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. (Webster's 1913.)

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