a person or thing that integrates.
Also called integraph. an instrument for performing numerical integrations.

1875–80; integrate + -or2 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
integrator (ˈɪntɪˌɡreɪtə)
1.  See also planimeter a person or thing that integrates, esp a mechanical instrument that determines the value of a definite integral, as the area under a curve
2.  computing
 a.  an arithmetic component with two input variables, x and y, whose output variable z is proportional to the integral of y with respect to x
 b.  an arithmetic component whose output variable is proportional to the integral of the input variable with respect to elapsed time

Collins English Dictionary - Complete & Unabridged 10th Edition
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Encyclopedia Britannica


instrument for performing the mathematical operation of integration, important for the solution of differential and integral equations and the generation of many mathematical functions

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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Example sentences
So they become an integrator of subsystems and software.
For the integrator, it is the gift that keeps on giving.
The perturbative approach is fed into an integrator.
Integrator software staff will also prepare for the equipment, subsystem and
  full system test and validation tasks.
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