ac·​cu·​ra·​cy | \ ˈa-kyə-rə-sē How to pronounce accuracy (audio) , ˈa-k(ə-)rə-\
plural accuracies

Definition of accuracy

1 : freedom from mistake or error : correctness checked the novel for historical accuracy
2a : conformity to truth or to a standard or model : exactness impossible to determine with accuracy the number of casualties
b : degree of conformity of a measure to a standard or a true value — compare precision entry 1 sense 2a

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Examples of accuracy in a Sentence

Each experiment is performed twice to ensure accuracy. The police questioned the accuracy of his statement. He could not say with any accuracy what he had seen. Several managers have tried to increase the speed and accuracy of the workers.
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Recent Examples on the Web

Other states also have problems with the accuracy of their 911 systems. Peter Demarco,, "A test of 911 calls reveals a reason for missed connections," 8 June 2019 Commissioner Steve Glassman and Mayor Dean Trantalis voted against both projects, after voicing concerns about the accuracy of traffic predictions, and about delayed emergency response times. Brittany Wallman,, "Traffic woes kill plan for new beach hotel," 5 June 2019 Savvy poll workers in Hatboro noticed the error and notified the county, concerned about the accuracy of the results, Corcoran said. Vinny Vella,, "Voting-machine glitch hid true, landslide victory for Hatboro library, officials say," 4 June 2019 Analysts say the industrial sector’s strength is especially notable because there is more uncertainty than normal about the accuracy of corporate forecasts in light of the continuing trade negotiations between the U.S. and China. Amrith Ramkumar, WSJ, "Industrial Stocks Are Leading the Market for the First Time in Years," 15 Feb. 2019 Problems with the authenticity of Amazon reviews come at a moment of broad public concern over the accuracy of information on platforms built by Silicon Valley. Elizabeth Dwoskin And Craig Timberg,, "How merchants quietly use Facebook to flood Amazon with fake reviews," 24 Apr. 2018 Poland leads narrowly in possession and pass accuracy. Victor Mather, New York Times, "Japan Advances in World Cup 2018 Despite Losing to Poland," 29 June 2018 The agency installed a network of chemical detectors at the Speedway—precise sensors linked to high-accuracy wind gauges revealed how chemical odorants travel in plumes through the air. Dan Dubno, Popular Mechanics, "How We'll Stop Chemical Attacks," 28 Apr. 2019 Historically, Diageo’s internal auditors would pull random samples of financial data to test the strength and accuracy of the company’s reporting and oversight processes. Nina Trentmann, WSJ, "Predictive Analytics Give a Boost to Diageo’s Cost-Savings Efforts," 25 Apr. 2019

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

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First Known Use of accuracy

1644, in the meaning defined at sense 1

History and Etymology for accuracy

accur(ate) + -acy

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Statistics for accuracy

Last Updated

17 Jun 2019

Look-up Popularity

Time Traveler for accuracy

The first known use of accuracy was in 1644

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More Definitions for accuracy



English Language Learners Definition of accuracy

: freedom from mistake or error : the quality or state of being accurate
: the ability to work or perform without making mistakes


ac·​cu·​ra·​cy | \ ˈa-kyə-rə-sē How to pronounce accuracy (audio) \

Kids Definition of accuracy

: freedom from mistakes

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Comments on accuracy

What made you want to look up accuracy? Please tell us where you read or heard it (including the quote, if possible).


to take the place or position of

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