Definition of logic
1a(1) : a science that deals with the principles and criteria of validity of inference and demonstration : the science of the formal principles of reasoning
a professor of logic
(2) : a branch or variety of logic
modal logic Boolean logic
(4) : the formal principles of a branch of knowledge
the logic of grammar
c : interrelation or sequence of facts or events when seen as inevitable or predictable
By the logic of events, anarchy leads to dictatorship.
d : the arrangement of circuit elements (as in a computer) needed for computation also : the circuits themselves
2 : something that forces a decision apart from or in opposition to reason
the logic of war
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Share logic
Time Traveler for logic
The first known use of logic was in the 12th century
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