Origin: Greek prefix anti-
Antiphonal has 5 different meanings across 2 categories:
bound collection of antiphons
A book of antiphons or anthems sung or chanted at a liturgy; an antiphonary or antiphoner.
containing or using responses; alternating
"responsive reading"
"antiphonal laughter"
relating to or resembling an antiphon or antiphony
Characterized by antiphones or antiphony; incorporating alternate, or responsive singing by a choir split into two parts.