·noun The next in order after the nineteen; one coming after nineteen others.
II. Twentieth ·adj Consisting, or being, one of twenty equal parts into which anything is divided.
III. Twentieth ·noun The quotient of a unit divided by twenty; one of twenty equal parts of one whole.
IV. Twentieth ·adj Next in order after the nineteenth; tenth after the tenth; coming after nineteen others;
— the ordinal of twenty.