question-mark

question mark

noun
1.
Also called interrogation point, interrogation mark. a 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 silver spots shaped like a question mark on the underside of each hind wing.

Origin:
1865–70

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Based on the Random House Dictionary, © Random House, Inc. 2014.
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Collins
World English Dictionary
question mark
 
n
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

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Cultural Dictionary

question mark definition


A punctuation mark (?) that follows a direct question: “Is Ralph really seven feet tall?”

The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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