diphthongia

diphthongia

 [dif-thon´je-ah] the production of double vocal sounds.

diphthongia

(dif-thong′ē-ă, ′gē-ă, ′jē-ă, ′jă) [ diphthong + -ia] The simultaneous utterance of two vocal sounds of different pitch in pathological conditions of the larynx.