com·​par·​a·​tor | \ kəm-ˈper-ə-tər How to pronounce comparator (audio) , -ˈpa-rə- \

Definition of comparator

: a device for comparing something with a similar thing or with a standard measure

Examples of comparator in a Sentence

Recent Examples on the Web Is the clinical trial placebo controlled or has an active comparator? Alex Zhavoronkov, Forbes, 27 Apr. 2021 The interim analysis was triggered when 131 cases showed up in participants across the trials, who were given either two doses of AZD1222 or a comparator vaccine, the meningococcal vaccine MenACWY. Beth Mole, Ars Technica, 23 Nov. 2020 In med-tech, clinical trials typically use the company’s own past products or a statistical benchmark as a comparator. Joe Carlson, Star Tribune, 14 Oct. 2020 The one proposal that passed muster with the board, on a 9-6 vote, was another attempt to develop an alternative to human fetal tissue, using as a comparator fetal tissue that has already been obtained and stored in a biorepository. Meredith Wadman, Science | AAAS, 18 Aug. 2020 The comparator, which was used to detect a change in position of objects in space by comparing separate still photos, had been on loan to the Smithsonian Institution’s Air and Space Museum for the past five years. Weldon B. Johnson, azcentral, 7 Feb. 2020 Instead of considering the best comparator compound and the easiest way to copy past programs, drug developers need to become more nimble and innovative. Richard Ghalie, STAT, 26 Dec. 2019 That goes to the fact that Burfict’s suspension is not occurring in a vacuum—it will be used as a comparator for other players who commit wrongful acts on the field. Michael Mccann,, 2 Oct. 2019 Over the next 24 weeks, this two-drug combo held down HIV as effectively as a three-drug regimen used as a comparator. Jon Cohen, Science | AAAS, 24 July 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'comparator.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

See More

First Known Use of comparator

1883, in the meaning defined above

Keep scrolling for more

Learn More About comparator

Time Traveler for comparator

Time Traveler

The first known use of comparator was in 1883

See more words from the same year

Dictionary Entries Near comparator




See More Nearby Entries 

Statistics for comparator

Cite this Entry

“Comparator.” Dictionary, Merriam-Webster, Accessed 27 Jul. 2021.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

Keep scrolling for more

More Definitions for comparator


com·​par·​a·​tor | \ kəm-ˈpar-ət-ər How to pronounce comparator (audio) \

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

More from Merriam-Webster on comparator Encyclopedia article about comparator


Test Your Vocabulary

Difficult Spelling Words Quiz

  • alphabet pasta spelling help
  • Which is the correct spelling?
Spell It

Can you spell these 10 commonly misspelled words?

Universal Daily Crossword

A daily challenge for crossword fanatics.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!