1 a : a comprehensive and fundamental law, doctrine, or assumption. b (1) : a rule or code of conduct. (2) : habitual devotion to right principles a man of principle. c : the laws or facts of nature underlying the working of an artificial device. 2 : a primary source : origin.

A principle is a kind of rule, belief, or idea that guides you. You can also say a good, ethical person has a lot of principles . In general, a principle is some kind of basic truth that helps you …

Legal Definition of principal. (Entry 1 of 2) 1 : being the main or most important, consequential, or influential their principal place of business the principal obligor. 2 : of, relating to, or constituting principal or a principal the principal amount of the loan.

Apr 06, 2019 · In science, a principle is an underlying rule or value that governs the way things work. It is often formulated as law and considered axiomatic – self-evident and self-proving. It can also serve as a logical starting point for further examination.

A principle is a general and fundamental truth that may be used in deciding conduct or choice: to adhere to principle. Canon, originally referring to an edict of the Church (a meaning that it still …