dataset

noun

da·​ta·​set ˈdā-tə-ˌset 

ˈda-

also ˈdä-

variants or less commonly data set

plural datasets also data sets

: a collection of data taken from a single source or intended for a single project

analyzed the dataset

If you're using a public dataset, make sure the data comes from a reliable source …

—Ben Dickson

The company is also … continuing to build its own dataset to improve its machine learning models.

—Alexandra S. Levine

Since AIs need a data set to learn and recognize patterns, one major worry artists have is that their artwork is being used for AI learning, raising concerns of copyright infringement.

—Daniel Salcedo Rubio

Examples of dataset in a Sentence

Recent Examples on the Web

Soon however, surveillance images of US cities appear on-screen (recognizable in part by storefront signs for brands like Marshalls, M&M’s World, and Coca-Cola), implying that the audience, too, could become components of images to be segmented, categorized, and fed into AI training datasets. —Farren Fei Yuan, Artforum, 1 Feb. 2026

As a result, radio astronomers rarely attempted to track fast-changing stellar or planetary signals across large datasets. —Rupendra Brahambhatt, Interesting Engineering, 1 Feb. 2026

According to breach notification service Have I Been Pwned, the dataset contains email addresses linked to approximately 72 million people, prompting the organization to notify affected users directly. —Kurt Knutsson, FOXNews.com, 30 Jan. 2026

This is the same dataset used by the National Retail Federation, and available from Amazon Web Services, Bloomberg, and the London Stock Exchange Group for economic benchmarking. —Gary Drenik, Forbes.com, 29 Jan. 2026

Word History

First Known Use

1958, in the meaning defined above

Rhymes for dataset

• alphabet
• arpanet
• bayonet
• biuret
• cigarette
• clarinet
• coronet
• coverlet
• epithet
• ethernet
• heavyset
• internet