Webster's 1828 Dictionary
ANTIPHONY
n.[contrary, and voice. ] 1. The answer of one choir to another, when an anthem or psalm is sung by two choirs; alternate singing.
2. A species of psalmody, when a congregation is divided into two parts, and each sings the verses alternately.
3. The words given out at the beginning of a psalm, to which both the choirs are to accommodate their singing.
4. A musical composition of several verses, extracted from different psalms.
Webster's 1913 Dictionary
ANTIPHONY
An *tiph "o *ny, n.; pl. Antiphonies. Etym: [See Antiphon. ]
1. A musical response; also, antiphonal chanting or signing.
2. An anthem or psalm sung alternately by a choir or congregation divided into two parts. Also figuratively. O! never more for me shall winds intone, With all your tops, a vast antiphony. R. Browning.
New American Oxford Dictionary
antiphony
an tiph o ny |anˈtifənē ænˈtɪfəni | ▶noun antiphonal singing, playing, or chanting.
Oxford Dictionary
antiphony
antiphony |anˈtɪf (ə )ni | ▶noun [ mass noun ] antiphonal singing, playing, or chanting.
The Wordsmith Dictionary