A fundamental assumption or guiding belief.
A fundamental essence, particularly one producing a given quality.
A rule used to choose among solutions to a problem.
A rule or law of nature, or the basic idea on how the laws of nature are applied.
Bernoulli's Principle
An original faculty or endowment.
A source, or origin; that from which anything proceeds; fundamental substance or energy; primordial substance; ultimate element, or cause.
Moral rule or aspect.
To equip with principles; to establish, or fix, in certain principles; to impress with any tenet or rule of conduct.
A hypothesis or conjecture.
A coherent statement or set of ideas that explains observed facts or phenomena and correctly predicts new facts or phenomena not previously observed, or which sets out the laws and principles of something known or observed; a hypothesis confirmed by observation, experiment etc.
A field of study attempting to exhaustively describe a particular class of constructs.
A set of axioms together with all statements derivable from them; or, a set of statements which are deductively closed. Equivalently, a formal language plus a set of axioms (from which can then be derived theorems). The statements may be required to all be bound (i.e., to have no free variables).
A description of an event or system that is considered to be accurate.
The underlying principles or methods of a given technical skill, art etc., as opposed to its practice.