breviaries
Meaning
of Breviary
Source: Webster's dictionaryExamples
The arrangement of the Psalms in the Rule of St. Benedict had a profound impact upon the breviaries used by secular and monastic clergy alike, up until 1911 when Pope St. Pius X introduced his reform of the Roman Breviary.
However, mendicant friars travelled around a lot and needed a shortened, or abbreviated, daily office contained in one portable book, and single-volume breviaries flourished from the thirteenth century onwards.
Later printed breviaries usually have woodcut illustrations, interesting in their own right but the poor relation of the beautifully illuminated breviaries.