1. The branch of philosophy that analyses inference
   "Students of logic learn to identify valid and invalid arguments"
    
2. A system of reasoning
   "The philosopher developed a new logic to address complex ethical dilemmas";
   - logical system, system of logic
    
3. Reasoned and reasonable judgment
   "it made a certain kind of logic"
    
4. The principles that guide reasoning within a given field or situation
   "economic logic requires it"; "by the logic of war"
    
5. (computing) the system of operations performed by a computer that underlies the machine's representation of logical operations
   "Boolean logic forms the basis of digital circuit design"

Derived forms: logics

Type of: common sense, good sense, gumption [informal], horse sense [informal], mother wit, philosophy, principle, sense, system, system of rules

Encyclopedia: Logic