###
Nth
(adjective)

Used to indicate an unspecified place in a series or sequence of items or events.

### Origin:

From latin n-th, from numerus "number".

### Examples:

- The nth digit of pi is 3.
- The nth term of the sequence is 4.
- The nth item in the list is missing.
- The nth prime number is 11.
- The nth element in the array is 5.