Meaning of LOGIC in English

noun a treatise on logic; as, mill's logic.

2. logic ·noun the science or art of exact reasoning, or of pure and formal thought, or of the laws according to which the processes of pure thinking should be conducted; the science of the formation and application of general notions; the science of generalization, judgment, classification, reasoning, and systematic arrangement; correct reasoning.

Webster English vocab.      Английский словарь Webster.