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

Points from credit cards like Chase Sapphire and American Express, for example, can be transferred to airline mileage programs, often at a one-to-one ratio. —Debra Kamin, New York Times, 31 Dec. 2024

As part of the recent renovation, the number of guest rooms decreased from 25 to 21, and the number of dedicated team members for those two floors increased from 19 to 21—a one-to-one ratio per room for even more personalized service. —Carley Thornell, Robb Report, 31 Dec. 2024

Step 2: Add the white vinegar and baking soda David Steckel, home expert on home service site Thumbtack, recommends a one-to-one ratio for this cleaning solution. —Julia Mitchem, Architectural Digest, 30 Dec. 2024

Edu and Arteta frequently spoke one-to-one, but Ayto and Arteta would engage at squad planning meetings. —James McNicholas, The Athletic, 12 Dec. 2024

Word History

First Known Use

1873, in the meaning defined at sense 1

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