1. Concerning the presence of great quantities; more than adequate; overly sufficient: Rainfall is more abundant this summer in some areas of the country, however it is much less abundant in other areas.
2. Well-supplied; pertaining to a more than plentiful supply of something: The prosecutor offered abundant evidence proving that the woman had committed the crime.

This has been one of the most abundant displays of beautiful fall colors that the city parks have ever produced in years.