1. (a.) Next in order after the nineteenth; tenth after the tenth; coming after nineteen others; -- the ordinal of twenty.

2. (a.) Consisting, or being, one of twenty equal parts into which anything is divided.

3. (n.) The next in order after the nineteen; one coming after nineteen others.

4. (n.) The quotient of a unit divided by twenty; one of twenty equal parts of one whole.