Powerful
Pronunciation : Pow"er*ful
Part of Speech : a.
Definition : 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.
2. (Mining)
Defn: Large; capacious; -- said of veins of ore.
Syn. -- Mighty; strong; potent; forcible; efficacious; energetic; intense. -- Pow"er*ful*ly, adv. -- Pow"er*ful*ness, n.
Source : Webster's Unabridged Dictionary, 1913
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