diphthongia

diphthongia

 [dif-thon´je-ah]
the production of double vocal sounds.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

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.
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