Interrogation

The act of interrogating or questioning; examination by questions; inquiry.

A question put; an inquiry.

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.

a sentence of inquiry that asks for a reply; "he asked a direct question"; "he had trouble phrasing his interrogations"

an instance of questioning; "there was a question about my training"; "we made inquiries of all those who were present"

formal systematic questioning

a transmission that will trigger an answering transmission from a transponder