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Comparator

//kəm.ˈpæ.ɹə.təɹ// noun

Noun

1
Any of various devices for comparing a physical property of two objects, or an object with a standard.
"optical comparator"
2
An electronic device that compares two voltages, currents or streams of data.
"electrical comparator"
3
Anything that serves as a comparison.
4
A thing being compared against in the PICO process; often, a diagnostic method or a treatment being compared against another.
"The applicant is therefore complaining not of a lack of action but rather of the decision of the local authority to reduce the care package that it had hitherto been making available to her. As such, a more appropriate comparator would be the case of Watts v. The United Kingdom (dec.), no. 53586/09 of 4 May 2010, in which the Court was content to proceed on the basis that a decision to close the care home where the elderly applicant was resident and to transfer her to another home constituted an interference with her rights under Article 8."
5
An application or program that compares prices, rates, tariffs of flights, smartphones, cars, etc.

Unscramble this word: comparator