Definition of comparator
: a device for comparing something with a similar thing or with a standard measure
First Known Use of comparator
Medical Definition of comparator
1: an apparatus used for determining concentration of dissolved substances (as hydrogen ions) in solution by color comparison with known standards
2: an instrument, device, or set of charts (as for use in chemical analysis and medical diagnosis) for the determination and specification of colors by direct comparison with a standardized system of colors
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