- next after the nineteenth; being the ordinal number for 20.
- being one of 20 equal parts.
- a twentieth part, especially of one (1/20).
- the twentieth member of a series.
- (usually prenominal)
- coming after the nineteenth in numbering or counting order, position, time, etc; being the ordinal number of twenty: often written 20th
- (as noun)
- one of 20 approximately equal parts of something
- (as modifier)
- the fraction that is equal to one divided by 20 (1/20)
