Twentieth /(?)/

Twen·ti·eth

Twentieth

a.
  1. Next in order after the nineteenth; tenth after the tenth; coming after nineteen others; -- the ordinal of twenty.
  2. Constituting, or being, one of twenty equal parts into which anything is divided.

Twentieth

n.
  1. The next in order after the nineteenth; one coming after nineteen others.
  2. The quotient of a unit divided by twenty; one of twenty equal parts of one whole.