question, interrogation, interrogative, interrogative sentence -- (a sentence of inquiry that asks for a reply; "he asked a direct question"; "he had trouble phrasing his interrogations")
interrogation -- (a transmission that will trigger an answering transmission from a transponder)
question, inquiry, enquiry, query, interrogation -- (an instance of questioning; "there was a question about my training"; "we made inquiries of all those who were present")