noun Pathology.

a condition in which the voice simultaneously produces two sounds of different pitch.

Origin of diplophonia

< New Latin, equivalent to diplo- diplo- + Greek phōn(ḗ) sound, tone, voice + Latin -ia -ia
Also called diphonia, diphthongia.
Related formsdip·lo·phon·ic [dip-luh-fon-ik] /ˌdɪp ləˈfɒn ɪk/, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019