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

Weather is transient by its very nature — a similar weather pattern might affect an environment differently depending on the preexisting conditions — and comprehensive datasets aren’t really available. —Issy Ronald, CNN Money, 22 Feb. 2026

In such cases, the best matches to our reference dataset are so small that they can no longer be confidently assigned to any one particular breed. —Michele Laufik, Martha Stewart, 19 Feb. 2026

Shuffling the dataset’s very finite fashion footprint aside to look elsewhere, sportswear formed a neat cluster—and a useful comparison. —Alexandra Harrell, Sourcing Journal, 18 Feb. 2026

What do these datasets have in common? —William Tong, Dallas Morning News, 18 Feb. 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