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differentiator

[dif-uh-ren-shee-ey-ter] /ˌdɪf əˈrɛn ʃiˌeɪ tər/
noun
1.
a person or thing that differentiates.
2.
Computers. an electronic device whose output signal is proportional to the derivative of its input signal.
3.
Electricity, Electronics. a transducer or circuit (differentiator circuit) whose output is proportional to the rate of change of the input signal.
Origin of differentiator
1885-1890
1885-90; differentiate + -or2
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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