a basic truth or law or assumption | (physics) the principle that an observer has no way of distinguishing whether his laboratory is in a uniform gravitational field or is in an accelerated frame of reference |
a rule or standard especially of good behavior | |
(law) an explanation of the fundamental reasons (especially an explanation of the working of some device in terms of laws of nature) | |
a basic generalization that is accepted as true and that can be used as a basis for reasoning or conduct | |
a rule or law concerning a natural phenomenon or the function of a complex system | |
rule of personal conduct | |