noun a book containing the rubrics of the mass.
2. ordinal ·noun a word or number denoting order or succession.
3. ordinal ·adj of or pertaining to an order.
4. ordinal ·adj indicating order or succession; as, the ordinal numbers, first, second, third, ·etc.
5. ordinal ·noun the book of forms for making, ordaining, and consecrating bishops, priests, and deacons.