one-to-one

adjective

1
: pairing each element of a set uniquely with an element of another set
2

Examples of one-to-one in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
The system reconstructs one-to-one digital twins of logistics hubs, inspection sites, and production lines. Aamir Khollam, Interesting Engineering, 6 Jan. 2026 The two values were approximately one-to-one for decades. Nick Bowlin, Harpers Magazine, 30 Dec. 2025 Imai and Murakami are not one-to-one comparisons. Justice Delos Santos, Mercury News, 29 Dec. 2025 Understanding symbolic interpretation as merely code-breaking is a popular fallacy, but the correspondences that underlay symbology are never one-to-one, but rather a complex, interlocking system of connotations and often contradictions across time periods and cultures. Literary Hub, 23 Dec. 2025 See All Example Sentences for one-to-one

Word History

First Known Use

1873, in the meaning defined at sense 1

Time Traveler
The first known use of one-to-one was in 1873

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Cite this Entry

“One-to-one.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/one-to-one. Accessed 12 Jan. 2026.

Kids Definition

one-to-one

adjective
ˌwən-tə-ˈwən
: pairing each element of a set with one and only one element of another set
a one-to-one correspondence between the real numbers and the points on a straight line
Last Updated: - Updated example sentences
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