to question (somebody) formally, exhaustively, or aggressively
to give or send out a signal to (e.g. a computer) to trigger a response
interrogation /-ʹgaysh(ə)n/ noun
interrogational /-ʹgaysh(ə)nl/ adj
interrogator noun
[Latin interrogatus, past part. of interrogare to question, from inter- + rogare to ask]