'Integrator' definitions:

Definition of 'integrator'

From: WordNet
noun
A measuring instrument for measuring the area of an irregular plane figure [syn: integrator, planimeter]

Definition of 'Integrator'

From: GCIDE
  • Integrator \In"te*gra`tor\, n. (Math. & Mech.) That which integrates; esp., an instrument by means of which the area of a figure can be measured directly, or its moment of inertia, or statical moment, etc., be determined. [1913 Webster]