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attenuator

[uh-ten-yoo-ey-ter]
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noun Electronics.
  1. a device for decreasing the amplitude of an electronic signal.
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Origin of attenuator

First recorded in 1920–25; attenuate + -or2
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for attenuator

attenuator

noun
  1. physics any device designed to reduce the power of a wave or electrical signal without distorting it
  2. a person or thing that attenuates
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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