one-to-one

[ wuhn-tuh-wuhn ]
/ ˈwʌn təˈwʌn /
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adjective

Also one-one. (of the relationship between two or more groups of things) corresponding element by element.

Origin of one-to-one

First recorded in 1870–75
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for one-to-one

British Dictionary definitions for one-to-one

one-to-one

adjective

(of two or more things) corresponding exactly
denoting a relationship or encounter in which someone is involved with only one other personone-to-one tuition
maths characterized by or involving the pairing of each member of one set with only one member of another set, without remainder

noun

a conversation, encounter, or relationship between two people
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012