comparator Syllabification: (com·par·a·tor)Pronunciation: /kəmˈparətər/Definition of comparator noun a device for comparing a measurable property or thing with a reference or standard. an electronic circuit for comparing two electrical signals. something used as a standard for comparison. Origin: late 19th century: from Latin comparat- 'paired, matched', from the verb comparare (see compare) + -or1comparator in other Oxford dictionaries Definition of comparator in the British & World English dictionary