Search Result for "question mark":
Wordnet 3.0

NOUN (1)

1. a punctuation mark (?) placed at the end of a sentence to indicate a question;
[syn: question mark, interrogation point]

The Collaborative International Dictionary of English v.0.48:

Interrogation \In*ter`ro*ga"tion\, n. [L. interrogatio: cf. F. interrogation.] [1913 Webster] 1. The act or process of interrogating or questioning; examination by questions; an instance of interrogating; inquiry. [1913 Webster] 2. A question put; an inquiry. [1913 Webster] 3. A point, mark, or sign, thus [?], indicating that the sentence with which it is connected is a question. It is used to express doubt, or to mark a query. Usually called a question mark; called also interrogation point. [1913 Webster +PJC] Note: In works printed in the Spanish language this mark is not only placed at the end of an interrogative sentence, but is also placed, inverted [as thus ([iques])], at the beginning. [1913 Webster]
WordNet (r) 3.0 (2006):

question mark n 1: a punctuation mark (?) placed at the end of a sentence to indicate a question [syn: question mark, interrogation point]
Moby Thesaurus II by Grady Ward, 1.0:

50 Moby Thesaurus words for "question mark": Chinese puzzle, baffling problem, bone of contention, brain twister, catechism, cross-interrogatory, cross-question, crossword puzzle, crux, debating point, demand, enigma, enigmatic question, feeler, floorer, inquiry, interrogation, interrogative, interrogatory, issue, jigsaw puzzle, knot, knotty point, leader, leading question, mind-boggler, moot point, mystery, nut to crack, perplexed question, perplexity, point at issue, point in question, poser, problem, puzzle, puzzlement, puzzler, query, question, question at issue, quodlibet, sixty-four dollar question, sticker, stumper, topic, tough proposition, trial balloon, vexed question, why
The Free On-line Dictionary of Computing (30 December 2018):

question mark ? ques "?", ASCII character 63. Common names: query; ITU-T: question mark; ques. Rare: whatmark; INTERCAL: what; wildchar; huh; hook; buttonhook; hunchback. Question mark is used, along with colon for C's lazy triadic "if" operator (similar to the IIF function in Visual Basic). The expression x?y:z evaluates x, then if x is true it returns y else it returns z. In Unix shell file name patterns, question mark matches any single character. (2003-06-17)