Thousandth,

Definition of Thousandth:

1. Each of one thousand equal parts into which something is or may be divided.

2. One part in a thousand. Equivalent to 1/1000.

3. Constituting number one thousand in a sequence; 1,000th.

How to use Thousandth in a sentence?

1. One thousandth of a percent.
2. The thousandth television episode.