diphthongia: Meaning and Definition of

diph•thon•gi•a

Pronunciation: (dif-thông'ē-u, -gē-u, -thong'-, dip-), [key]
— n. Pathol.
  1. diplophonia.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.