A mark (?) indicating a question. A question mark is used with a direct question. It behaves like a period when accompanied by quotation marks. The question mark has its origin in quaestico, Latin for I ask. This was shortened by space-saving scribes to become QO and, later, the letter Q above the letter O. Subsequently, the Q was degraded into a squiggle and the O into a little round spot. The question mark is also called an interrogation point or interrogation mark. See also PUNCTUATION QUOTATION MARK
a punctuation mark (?) placed at the end of a sentence to indicate a question
a punctuation mark and, more pedantically, a tone mark
a punctuation mark and, morepedantically, a tone mark
n. In some operating systems and applications, a wildcard character often used to represent any other single character. The question mark is one of two wildcard characters supported by the MS-DOS, Windows NT, and OS/2 operating systems. See also asterisk.
The question mark (also known as an interrogation point, query,In journalism. See Truss, Lynne. Eats, Shoots & Leaves, 2003. p. 139.
Question Mark was a modified Fokker C-2 airplane, flown by aviators from the United States Army Air Corps to experiment with aerial refueling. The flight took place on January 1 to January 7, 1929.