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

And this year, some reliable government datasets disappeared altogether. —Abby McCloskey, Twin Cities, 4 Jan. 2026

January is when many of these companies organize, repackage and resell their datasets. —Kurt Knutsson, FOXNews.com, 1 Jan. 2026

Other long-running missions at Mars are also producing critical datasets for understanding radiation hazards, scientists said. —Sharmila Kuthunur, Space.com, 31 Dec. 2025

These reputation-threatening risks include AI datasets that show biased information or jeopardize security. —Sasha Rogelberg, Fortune, 29 Dec. 2025

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