ἀντίφωνος

Etymology
From.

Adjective

 * 1) sounding in answer, concordant, as in the octave
 * 2)  responsive to
 * 3)  a concord in the octave
 * 4)  antiphon, anthem
 * 1)  responsive to
 * 2)  a concord in the octave
 * 3)  antiphon, anthem
 * 1)  a concord in the octave
 * 2)  antiphon, anthem
 * 1)  antiphon, anthem