The Collaborative International Dictionary of English v.0.48:

Ordinal \Or"di*nal\, n.
   1. A word or number denoting order or succession.
      [1913 Webster]

   2. (Ch. of Eng.) The book of forms for making, ordaining, and
      consecrating bishops, priests, and deacons.
      [1913 Webster]

   3. (R. C. Ch.) A book containing the rubrics of the Mass.
      [Written also ordinale.]
      [1913 Webster]