1. [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.
1. The act or process of interrogating or questioning;
examination by questions; an instance of interrogating;
2. A question put; an inquiry.
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.
WordNet (r) 3.0 (2006):
n 1: a punctuation mark (?) placed at the end of a sentence to
indicate a question [syn: question mark, interrogation
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):
"?", ASCII character 63.
Common names: query; ITU-T: question mark; ques. Rare:
whatmark; INTERCAL: what; wildchar; huh; hook; buttonhook;
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.