In‐ter′ro‐ga″tion (?), n. [L. interrogatio: cf. F. interrogation.]
1. The act of interrogating or questioning; examination by questions; inquiry.
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. Called also interrogation point.
☞ 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, at the beginning.