a·pho·ni·a (ā-fō'nē-ə) n. Loss of the voice resulting from disease, injury to the vocal cords, or various psychological causes, such as hysteria.
[New Latin aphōnia, from Greek aphōniā, speechlessness, from aphōnos, voiceless : a-, without; see a-1 + phōnē, voice; see bhā-2 in Indo-European roots.] a·phon'ic (ā-fŏn'ĭk, ā-fō'nĭk) adj.