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Obsolete vs Undefined - What's the difference?

obsolete | undefined |

As adjectives the difference between obsolete and undefined

is that obsolete is obsolete, deprecated (computing) while undefined is lacking a definition or value.

obsolete

English

Adjective

(en adjective)
  • No longer in use; gone into disuse; disused or neglected (often by preference for something newer, which replaces the subject).
  • * {{quote-magazine, date=2013-07-20, volume=408, issue=8845, magazine=(The Economist)
    • , title= The attack of the MOOCs , passage=Since the launch early last year of […] two Silicon Valley start-ups offering free education through MOOCs, massive open online courses, the ivory towers of academia have been shaken to their foundations. University brands built in some cases over centuries have been forced to contemplate the possibility that information technology will rapidly make their existing business model obsolete .}}
  • (biology) Imperfectly developed; not very distinct.

    • Usage notes

    * Nouns to which "obsolete" is often applied: word, phrase, equipment, computer, technology, weapon, machine, law, statute, currency, building, idea, skill, concept, custom, theory, tradition, institution.

    Synonyms

    * (no longer in use) ancient, antiquated, antique, archaic, disused, neglected, old, old-fashioned, out of date * abortive, obscure, rudimental

    Derived terms

    * obsoleteness

    Verb

    (obsolet)
  • (US) Oxford Dictionary To cause to become obsolete.
    • This software component has been obsoleted .
    We are in the process of obsoleting this product.

    Usage notes

    * (term) is often used in computing and other technical fields to indicate an effort to remove or replace something. * Compare

    Related terms

    * obsolesce * obsolescence * obsolescent * obsoletion

    References

    External links

    * * * ----

    undefined

    English

    Adjective

    (wikipedia undefined) (-)
  • Lacking a definition or value.
  • (mathematics, computing) That does not have a meaning and is thus not assigned an interpretation.
    • The result of division by zero is undefined .

    Antonyms

    * defined