logic
noun(log-ic)
a system of reasoning
Synonyms: logical system, system of logic, 
logic
noun(log-ic)
reasoned and reasonable judgment
Examples:
It made a certain kind of logic. 
logic
noun(log-ic)
the branch of philosophy that analyzes inference
logic
noun(log-ic)
the principles that guide reasoning within a given field or situation
Examples:
Economic logic requires it. 
By the logic of war. 
logic
noun(log-ic)
the system of operations performed by a computer that underlies the machine's representation of logical operations