- Powerful Pow"er*ful, a.
1. Full of power; capable of producing great effects of any
kind; potent; mighty; efficacious; intense; as, a powerful
man or beast; a powerful engine; a powerful argument; a
powerful light; a powerful vessel.
The powerful grace that lies In herbs, plants, stones, and their true qualities. --Shak. [1913 Webster]
2. (Mining) Large; capacious; -- said of veins of ore. [1913 Webster]
The Collaborative International Dictionary of English. 2000.