A selected portion or passage of scripture appointed to be read on a particular Sunday. A technical term for the reading. The word lection, via the mediaeval French, became the English word lesson as in the phrase: “Here endeth the lesson.” It meant reading, not something that was taught.
(1) A lectionary is the official timetable of readings to be used throughout the church year, the pattern by which lections are organised.
(2) A book containing scripture readings arranged not in their biblical order, but according to the pattern of the timetable.