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interrogator

noun

  1. one who interrogates
L322671 on Wikidata ↗

Wiktionary

noun

Etymology: From Latin interrogātor. By surface analysis, interrogate + -or.

  1. One who interrogates; a person who asks questions, especially one who is adversarial.
  2. A device that requests data from another device.

    Any RFID interrogator within 30 meters can read an RFID tag in active mode.