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question markQuestion marks ( ? ) are used to identify sentences that ask a question (technically known as interrogative sentences). They almost always appear at the end of a sentence, marking its conclusion (though there is a specific exception to this rule).Continue reading…question markn.1. A punctuation symbol (?) written at the end of a sentence or phrase to indicate a direct question. Also called interrogation point.2. Something that is unknown, mysterious, or doubtful: Which players will still be on the team next year remains a question mark.American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.question mark n 1. (Printing, Lithography & Bookbinding) the punctuation mark ?, used at the end of questions and in other contexts where doubt or ignorance is implied 2. (Printing, Lithography & Bookbinding) 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 and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014ques?tion mark` n. 1. Also called interrogation point. a mark indicating a question: usu., as in English, the mark (?) placed after a question. 2. something unanswered or unknown. [1865?70] Random House Kernerman Webster’s College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.question markA punctuation mark used to show that something is being asked.Dictionary of Unfamiliar Words by Diagram Group Copyright © 2008 by Diagram Visual Information Limited