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English definition of “polar”

polar

adjective (OF ELECTRICITY)   /ˈpoʊ·lər/
relating to either of the two ends of a magnet or two parts of a battery (= device that produces electricity ) which have opposite charges : fig. The play’s main characters are polar opposites (= They are completely opposite ). chemistry Polar also describes a substance whose molecules have opposite positive and negative poles
(Definition of polar adjective (OF ELECTRICITY) from the Cambridge Academic Content Dictionary © Cambridge University Press)
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