01 a. Full of power; capable of producing great effects of any kind; potent; mighty; efficacious; intense; as, a powerful man or beast; a powerfu…
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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.
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2.
Large; capacious; -- said of veins of ore.(Mining)