POW'ERFUL, a. Having great physical or mechanical power strong forcible mighty as a powerful army or navy a powerful engine.
1. Having great moral power forcible to persuade or convince the mind as a powerful reason or argument.
2. Possessing great political and military power strong in extent of dominion or national resources potent as a powerful monarch or prince a powerful nation.
3. Efficacious possessing or exerting great force or producing great effects as a powerful medicine.
4. In general, able to produce great effects exerting great force or energy as a powerful eloquence.
The word of God is quick and powerful. Hebrews 4
5. Strong intense as a powerful heat or light.