WordWeb Online

1. Producing or capable of producing (especially abundantly)
   "productive farmland"; "his productive years"; "a productive collaboration"
    
2. Having the ability to produce or originate
   - generative
    
3. Yielding positive results
    
4. Marked by great fruitfulness
   "a productive vineyard"
   - fat, fertile, rich

See also: amentaceous, amentiferous, arable, creative, cultivable, cultivatable, fecund, fertile, fruitful, fur-bearing, nut-bearing, oil-bearing, originative, productively, productiveness, profitable, prolific, rich, successful, tillable

Antonym: unproductive

Encyclopedia: Productive