one-to-one

adjective

ˌwən-tə-ˈwən 

-də-

1

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

2

: one-on-one sense 2

Examples of one-to-one in a Sentence

Recent Examples on the Web

Early on, people expected this to be a one-to-one Twitter replacement. —Tom Huddleston Jr., CNBC, 29 Aug. 2025

Conveniently, two of the best credit card programs in the space—Chase Ultimate Rewards points and Bilt Rewards points—transfer to the Hyatt program instantly, at a one-to-one ratio. —Chris Dong, Travel + Leisure, 25 Aug. 2025

The Surrenne Gym is stocked with the latest from Technogym, while the Performance Studio is reserved for one-to-one training and two open-air sanctuaries, the Waves Studio and Riviera Reflections, which extends directly onto the terrace. —Caroline Tell, Forbes.com, 25 Aug. 2025

From a content perspective, Konami has played it incredibly safe, using the same voice work and music, and leaving the story completely unaltered--effectively making Delta a one-to-one remake. —James Brizuela, MSNBC Newsweek, 22 Aug. 2025

Word History

First Known Use

1873, in the meaning defined at sense 1

Rhymes for one-to-one

• aldosterone
• anticyclone
• progesterone
• testosterone
• acetone
• anglophone
• baritone
• bourguignon
• buspirone
• chaperon
• chaperone
• cobblestone

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