1. Antiphonal singing is of great antiquity and occurs in the folk and liturgical music of many cultures

2. Antiphon (ăn`tĭfən), in Roman Catholic liturgical music, generally a short text sung before and after a psalm or canticle

3. Antiphon, in Roman Catholic liturgical music, chant melody and text sung before and after a psalm verse, originally by alternating choirs (Antiphonal singing)