aphonia (n.) Look up aphonia at Dictionary.com
in pathology, "want of voice, loss of voice through some physical condition," 1778, from medical Latin aphonia, from Greek aphonia "speechlessness," abstract noun from aphonos "voiceless," from a- "not, without" (see a- (3)) + phone "voice," from PIE root *bha- (2) "to speak, tell, say" + abstract noun ending (see -ia). Englished form aphony is attested from 1680s.