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Meaning of differentiator

dif•fer•en•ti•a•tor

Pronunciation: (dif"u-ren'shē-ā"tur), [key]
— n.
  1. a person or thing that differentiates.
  2. an electronic device whose output signal is proportional to the derivative of its input signal.
  3. a transducer or circuitwhose output is proportional to the rate of change of the input signal.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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