legacy system

noun

An old computer system or application program that continues to be used because the user (typically an organization) does not want to replace or redesign it.

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Meanings

nounlegacy system (plural legacy systems)

plural legacy systems

  1. computingAn old computer system or application program that continues to be used because the user (typically an organization) does not want to replace or redesign it.

Translations

French système hérité
  • système héritéTranslations
Cite this entry
APA

legacy system. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/legacy%20system

MLA

“legacy system.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/legacy%20system. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “legacy system,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/legacy%20system.

Source: legacy system on Wiktionary, CC BY-SA 4.0.