acrophonetic,a.|ˌækrəʊfəʊˈnɛtɪk| [mod.f.Gr. ἄκρο-, see acro- + ϕωνητ-ός to be uttered + -ic.] Pertaining to acrophony. 1866Felton Anc. & Mod. Greece I. iii. 49 The principle of this alphabetic element has received the technical name of acrophonetic, or the principle of initial sounds.