Interrogation /(?)/

In·ter·ro·ga·tion

Interrogation

n.
  1. The act or process of interrogating or questioning; examination by questions; an instance of interrogating; 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. Usually called a question mark; called also interrogation point.