Law of Demeter

proper noun

A design guideline for developing particularly object-oriented programs that mandates loose coupling between objects.

Meanings

proper noun
  1. object-oriented programmingcomputingA design guideline for developing particularly object-oriented programs that mandates loose coupling between objects.

    According to the Law of Demeter, the second approach is better because the summary screen sends a message only to an object that is returned by one of its methods […]

    1998, Scott W. Ambler, Building Object Applications that Work: Your Step-by-Step Handbook for Developing Robust Systems with Object Technology, Cambridge University Press, →ISBN, page 249
    1 more example

    An adaptive program contains only hooks into the class structure and normally does not fully encode the details of the class structure. This idea of not duplicating the class structure is an application of the key idea behind the Law of Demeter.

    1996, Karl J. Lieberherr, Adaptive Object-oriented Software: The Demeter Method with Propagation Patterns, Pws Publishing Company, →ISBN

    Synonyms: LoD, principle of least knowledge

Synonyms & antonyms

proper nounA design guideline for developing particularly object-oriented programs that mandates loose coupling between objects.

Origin

Named for its origin in the Demeter Project, an adaptive programming and aspect-oriented programming effort, itself named after the Greek goddess Demeter.

Full word history & related roots →

Translations

German Gesetz von Demeter
  • Gesetz von Demetersoftware design guideline
Hindi डिमीटर की विधि
  • डिमीटर की विधि (ḍimīṭar kī vidhi)software design guideline
Turkish Demeter Yasası
  • Demeter Yasasısoftware design guideline
Cite this entry
APA

Law of Demeter. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/Law%20of%20Demeter

MLA

“Law of Demeter.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/Law%20of%20Demeter. Accessed November 5, 2026.

Chicago

WatkinsX Dictionary, s.v. “Law of Demeter,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/Law%20of%20Demeter.

Source: Law of Demeter on Wiktionary, CC BY-SA 4.0.