The Collaborative International Dictionary
Ecphonema
Ecphonema \Ec`pho*ne"ma\, n. [NL., fr. Gr. ? a thing called out, fr. ? to cry out; 'ek out + ? voice.] (Rhet.) A breaking out with some interjectional particle.
Wiktionary
ecphonema
n. (context rhetoric English) interjection; ecphonesis