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
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Palacio, who describes Give Miami Day as the school’s main fundraising event, said the money raised will not just help cover student tuition but will also help fill payment gaps to ensure the school can continue to offer a one-to-one ratio of therapists to students. Miami Herald, 15 Nov. 2025 Michael liked to have a one-to-one relationship with his music video directors. Dan Beck, Rolling Stone, 14 Nov. 2025 Graham Glasgow has had his struggles in the run game, and was never going to be a one-to-one replacement for Ragnow. Colton Pouncy, New York Times, 3 Nov. 2025 All points are then transferred instantly at a one-to-one ratio. Chris Dong, Travel + Leisure, 29 Oct. 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 21 Nov. 2025.

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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