ac·​cu·​ra·​cy | \ˈa-kyə-rə-sē, 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

Tony Romo spent his first season in the commentary booth predicting what would happen next with astounding accuracy. Steven Ruiz, For The Win, "Tony Romo predicts the Packers and Jaguars will meet in Super Bowl LIII," 12 July 2018 Next up was buying anything branded with Kodak, a now-ailing camera company that once signified your wealth with 61.6 percent accuracy. Fox News, "Owning an Apple iPhone is the best way to prove you're rich - replacing mustard," 10 July 2018 Benjamin Franklin, with perfect accuracy, placed the principle of compromise at the center of the new American government. Lance Morrow, WSJ, "Political Harassment Is for the Birds," 6 July 2018 Computing systems can now examine a photo or video footage of a face and match it to an image in an existing database of faces, all with an accuracy that rivals human sight, something that was not possible just five years ago. New York Times, "Newspaper Shooting Shows Widening Use of Facial Recognition by Authorities," 29 June 2018 Many of these don’t describe my dad at all, while others do with eerie accuracy. Alice Bolin, Longreads, "The Daughter as Detective," 26 June 2018 Former Rosenberg Mayor Joe Gurecky and his wife Doris are the current owners and have restored this home to its original splendor with historic accuracy. Staff Report, Houston Chronicle, "‘A Night at the Museum’ to benefit Rosenberg Railroad Museum," 25 June 2018 Since their launch in 2014, Canines for Conservation has completed over 200 busts of poached merchandise, homing in on ivory elephant tusks, pangolin scales, rhinoceros horns and more with 90 percent accuracy. Katherine J. Wu, Smithsonian, "It’s Pooches vs. Poachers in the Fight Against Wildlife Smugglers," 22 June 2018 An artificial intelligence program developed by researchers at Google can predict when a hospital patient will die with up to 95 percent accuracy, according to a new paper published in the journal npj Digital Medicine. Avery Thompson, Popular Mechanics, "New Google AI Calculates the Odds You'll Survive a Hospital Stay," 19 June 2018

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

21 Oct 2018

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 \

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 clear from alleged fault or guilt

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