responsory

responsory is defined in Webster's Unabridged Dictionary (1913) with 2 senses. The full text of each entry is reproduced verbatim below.

Definitions

  1. 1.(Eccl.) (a) The answer of the people to the priest in alternate speaking, in church service. (b) A versicle sung in answer to the priest, or as a refrain. Which, if should repeat again, would turn my answers into responsories, and beget another liturgy. Milton.
  2. 2.(Eccl.) An antiphonary; a response book.

Source: Webster's Unabridged Dictionary, 1913 edition (public domain, via GCIDE / Project Gutenberg).

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