interrogator

[ in-ter-uh-gey-ter ]
/ ɪnˈtɛr əˌgeɪ tər /

noun

a person who interrogates.
Also called challenger. Radio. a transmitter that emits a signal to trigger a transponder.

Origin of interrogator

1745–55; < Late Latin interrogātor; see interrogate, -tor
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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British Dictionary definitions for interrogator

interrogator

/ (ɪnˈtɛrəˌɡeɪtə) /

noun

a person who interrogates
a radio or radar transmitter used to send interrogating signals

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012