A mass-book is a book, used most commonly by the laity, as an aid while attending Catholic Mass. The massbook comprises scriptural readings, prayers, and psalms for the day's mass, sometimes also including homiletic or exegetical material.

What is the Mass of book?

. Hardcover books generally weigh between two to seven pounds (0.9 kg to 3.18 kg). Weight and mass are not interchangeable terms. Mass is resistance to acceleration and is also defined as the measure of how much matter and object contains, and weight is the force of gravity on an object.

What is the book used in Catholic Mass?

missal, type of book containing the prayers, important chants, responses, and necessary instructions for the celebration of the mass (Latin: missa) in the Roman Catholic Church throughout the year.