pertaining to antiphons or antiphony; responsive. an antiphonary.

What is antiphonal chanting?

An antiphon (Greek ἀντίφωνον, ἀντί "opposite" and φωνή "voice") is a short chant in Christian ritual, sung as a refrain. ... Antiphonal psalmody is the singing or musical playing of psalms by alternating groups of performers. The term “antiphony” can also refer to a choir-book containing antiphons.

What antiphonal means?

Answering responsively, as in antiphony. ... A book of antiphons or anthems sung or chanted at a liturgy; an antiphonary or antiphoner. noun. An antiphon; a piece sung or chanted in an antiphonal manner.