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.
2. (Mining) 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.