Of, relating to, or designating the mental aspects of sound production.
Origin
Early 20th century; earliest use found in Transactions of the American Philological Association. From psycho- + phonetic, after Polish psychofonetyczny (J. B. de Courtenay 1894, in Rozprawy Akad. Umiejętności: Wydział Filol. 2nd Ser. 5 254. Compare German psychophonetisch.