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Apostrophe vs Undefined - What's the difference?

apostrophe | undefined |

As a noun apostrophe

is .

As an adjective undefined is

lacking a definition or value.

apostrophe

English

Etymology 1

From (etyl) apostrophe, or (etyl) apostrophus, from (etyl) .

Alternative forms

* *

Noun

(en noun)
  • (orthography) The text character , which serves as a punctuation mark in various languages and as a diacritical mark in certain rare contexts.
    • Derived terms
    * greengrocer's apostrophe
    Related terms
    (punctuation)
    Usage notes
    In English, the apostrophe is used to mark the possessive or to show the omission of letters or numbers.
    See also
    * (wikipedia)

    Etymology 2

    From (etyl) apostrophe, from (etyl) .

    Noun

    (en noun)
  • (rhetoric) A sudden exclamatory piece of dialogue addressed to someone or something, especially absent.
    • Derived terms
    * apostrophically
    Related terms
    * catastrophe

    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