adjective1. denoting a certain position in a sequence of numbers
2. of, relating to, or characteristic of an order in biological classification
noun3. short for ordinal number
4. a book containing the forms of services for the ordination of ministers
5. Roman Catholic Church a service book
Word origin
C14: (in the sense: orderly): from Late Latin
ordinalis denoting order or place in a series, from Latin
ordō order