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Postscript vs Undefined - What's the difference?

postscript | undefined |

As a noun postscript

is (countable) an addendum to a letter, added after the author’s signature.

As a verb postscript

is to extend (a letter or another document) with additional remarks.

As an adjective undefined is

lacking a definition or value.

postscript

English

Alternative forms

* post script * postscriptum (post scriptum) * PS (, etc.)

Noun

(en noun)
  • (countable) An addendum to a letter, added after the author’s signature.
  • (countable) An addition to a story, play, etc.

    • Usage notes

    To indicate the beginning of a postscript to a letter, one often uses the abbreviation PS'' (or '' , etc) followed by a colon or comma.

    Verb

    (en verb)
  • To extend (a letter or another document) with additional remarks.

    • 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