Question Mark (noun) Definition, Meaning & Examples

noun
  1. a punctuation mark indicating a question: usually, as in English, the mark (?) placed after a question.
  2. something unanswered or unknown: His identity is still a question mark to most of us.
  3. an anglewing butterfly, Polygonia interrogationis, having a silver marking that resembles a question mark on the underside of each hindwing.
noun
  1. the punctuation mark ?, used at the end of questions and in other contexts where doubt or ignorance is implied
  2. this mark used for any other purpose, as to draw attention to a possible mistake, as in a chess commentary
  3. an element of doubt or uncertainty
Question Mark (noun) Definition, Meaning & Examples

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