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Letterhead vs Undefined - What's the difference?

letterhead | undefined |

As a noun letterhead

is paper which has the name of the person or company it is from printed on the top (possibly including address or other information) used for formal correspondence.

As an adjective undefined is

lacking a definition or value.

letterhead

English

Noun

(en noun)
  • Paper which has the name of the person or company it is from printed on the top (possibly including address or other information). Used for formal correspondence.

    • 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