logic
A method of human thought that involves thinking in a linear, step-by-step manner about how a problem can be solved. Logic is the basis of many principles including the scientific method.
Other meanings
The study of the principles and criteria of valid inference and demonstration.
The mathematical study of relationships between rigorously defined concepts and of mathematical proof of statements.
Word history
From Ancient Greek "λογική".
Where this comes from
This definition is adapted from “logic” on Wiktionary, by its contributors, published under CC BY-SA 4.0. This page is published under the same licence.