1803, "representing vocal sounds," from Modern Latin phoneticus (Zoega, 1797), from Greek phÅnÄ“tikos "vocal," from phÅnÄ“tos "to be spoken, utterable," verbal adjective of phÅnein "to speak clearly, utter," from phÅnÄ“ "sound, voice," from PIE root *bha- (2) "to speak, tell, say" (see fame (n.)). Meaning "relating or pertaining to the human voice as used in speech" is by 1861. Related: Phonetical.