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Descriptor vs Undefined - What's the difference?

descriptor | undefined |

As a noun descriptor

is that which describes; a word, phrase, etc serving as a description.

As an adjective undefined is

lacking a definition or value.

descriptor

English

(wikipedia descriptor)

Noun

(en noun)
  • That which describes; a word, phrase, etc. serving as a description.
  • # (computing) The name of a category of data in an information storage and retrieval system.
  • # (information science) A word that describes the subject of an article or book.

    • Synonyms

    * (information science) index term

    Derived terms

    * file descriptor * segment descriptor

    Anagrams

    * English agent nouns

    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