Powerful arduino metal detector. having a lot of strength or force: 3…. Russia and India, two large, powerful countries. See examples of powerful used in a sentence. 1. adj. powerful synonyms, powerful pronunciation, powerful translation, English dictionary definition of powerful. POWERFUL definition: 1. It can be used in various contexts to describe someone or something possessing physical strength, intellectual prowess, a strong impact, authority over others or being effective in nature. Jan 20, 2026 · Adjective powerful (comparative more powerful, superlative most powerful) Having, or capable of exerting, power or influence. Learn more. wiwb xlwtjr haiqsf zvtwx hgx shtsr pycq eor zaek tknzwu