Descriptive of, or characteristic of, the placement of a number in a well organized sequence: The position of the  letter "h" in the alphabet corresponds to the ordinal position of the number "8" in a counting sequence.

The number indicating the place, location, or designation of a number in a sequence: When judging a contest, the judges must determine the ordinal positions of the winning contestants; such as, First Place; Second Place; Third Place, etc.