in principle Definition

principle
noun

1. A general truth or assumption from which to argue.
2. A scientific law, especially one that explains a natural phenomenon or the way a machine works.
3. A general rule of morality that guides conduct; the having of or holding to such rules.

Example: a woman of principle
Thesaurus: doctrine, dogma, code, golden rule, canon, dictum; attitude, belief.
4. A set of such rules.

Thesaurus: scruples, morals, honour, ethics, morality, conscience, integrity; Antonym: corruption, wickedness.
Form: principles
5. technical
A norm of procedure.
Example: the principle of primogeniture
6. A fundamental element or source.

Example: the vital principle
7. chem.
A constituent of a substance that gives it its distinctive characteristics.

Idiom: in principle

Said especially of agreement or disagreement to a plan, decision or action: in theory; in general, although not necessarily in a particular case.
Example: We approved the scheme in principle, subject to certain adjustments

Idiom: on principle

On the grounds of a particular principle of morality or wisdom.

Etymology: 14c: from Latin principium beginning or source.