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Definition of logic
1reasoning conducted or assessed according to strict principles of validity:experience is a better guide to this than deductive logic he explains his move with simple logic the logic of the argument is faulty a particular system or codification of the principles of proof and inference:Aristotelian logic the systematic use of symbolic and mathematical techniques to determine the forms of valid deductive argument. the quality of being justifiable by reason:there’s no logic in telling her not to hit people when that’s what you’re doing
) the course of action or line of reasoning suggested or made necessary by:if the logic of capital is allowed to determine events
2a system or set of principles underlying the arrangements of elements in a computer or electronic device so as to perform a specified task. logical operations collectively.