principle
Abbr. prin.
1.
2.
3. A fixed or predetermined policy or mode of action.
4. A basic or essential quality or element determining intrinsic nature or characteristic behavior: the principle of self-preservation.
5. A rule or law concerning the functioning of natural phenomena or mechanical processes: the principle of jet propulsion.
6. Chemistry. One of the elements that compose a substance, especially one that gives some special quality or effect.
7. A basic source. See Usage Note at principal.
8. Principle Christian Science. God.
in principle
With regard to the basics: an idea that is acceptable in principle.
on principle
According to or because of principle.
[Middle English, alteration of Old French principe, from Latin prīncipium, from prīnceps, prīncip-, leader, emperor.]
Word History: