Overuse of the voice, as by excessive loudness or tension of the vocal muscles. ... Origin: hyper-+ G. Phone, sound, voice ... (05 Mar 2000) ... 
Type: Term Pronunciation: hī′pĕr-fō′nē-ă Definitions: 1. Excessive effort in voice production characterized by loudness and undue tension of the vocal muscles.
hyperphonia Overuse of the voice, as by excessive loudness or tension of the vocal muscles.