1ask questions of (someone) closely, aggressively, or formally:he was interrogated by MI6
2obtain data from (a computer file, database, storage device, or terminal):an interactive system enables users to interrogate the database
(of an electronic device) transmit a signal to (another device, especially one on a vehicle) to obtain information about identity, condition, etc.:a ground-based transmitter sends a signal to interrogate an instrument on the aircraft
