powerful Meaning in the Cambridge English Dictionary
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Meaning of “powerful” in the English Dictionary

"powerful" in British English

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powerfuladjective

uk   /ˈpaʊə.fəl/  us   /ˈpaʊ.ɚ-/

powerful adjective (CONTROL)

B1 having a lot of ​power to ​controlpeople and ​events: The ​president is more powerful than the ​primeminister. She's the most powerful ​person in the ​organization.
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powerful adjective (STRENGTH)

B1 having a lot of ​strength or ​force: She's an ​extremely powerful ​runner. The ​picturequality is ​bad because the TV ​signal isn't powerful enough.B2 having a very ​greateffect: a powerful ​drug Her ​speech about ​cruelty to ​children was very powerful.

powerful adjective (IMAGE SIZE)

having the ​power to ​increase the ​size of an ​image of something that is very ​small or ​far away many ​times: You'd need an ​extremely powerful ​microscope to ​see something so ​small.
powerfully
adverb uk   us   /-i/
B2 He ​argued powerfully and ​persuasively against ​capitalpunishment. She ​kicked the ​ball so powerfully that it ​flew over the ​hedge. Klaus is a very powerfully built man (= has a ​body with ​largestrongmuscles).
(Definition of powerful from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"powerful" in American English

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powerfuladjective

 us   /ˈpɑʊ·ər·fəl/

powerful adjective (STRONG)

strong: The ​picturequality is ​bad because the TV ​signal isn’t powerful enough. Things that are powerful have a ​strongeffect: a powerful ​drug

powerful adjective (CONTROLLING)

having a lot of ​power: He’s in a powerful ​position as an ​adviser of the ​president.
(Definition of powerful from the Cambridge Academic Content Dictionary © Cambridge University Press)
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