Emily Dickinson Lexicon

E-PIPH'O-NEM, or EP-I-PHO-NE'MA, n. [Gr. επιφωνημα, exclamation; επιφωνεω, to cry out; επι and φωνεω.]

In oratory, an exclamation; an ecphonesis; a vehement utterance of the voice to express strong passion, in a sentence not closely connected with the general strain of the discourse; as, O mournful day! Miserable fate! Admirable clemency! Johnson. Encyc.