Noun:
1: logic the branch of philosophy that analyzes inference
2: logic reasoned and reasonable judgment; "it made a certain kind of logic"
3: logic the principles that guide reasoning within a given field or situation; "economic logic requires it"; "by the logic of war"
4: system of logic, logic, logical system a system of reasoning
5: logic the system of operations performed by a computer that underlies the machine's representation of logical operations