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.

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On the farm, the feed for chicks is significantly different from the roosters’; ______ not even comparable.

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Origin of one-to-one

First recorded in 1870–75

Words nearby one-to-one

one-suiter, one-tailed, one that loved not wisely but too well, One Thousand Guineas, one-time, one-to-one, one-track, one-track mind, one-trick pony, Onetti, one-two

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use one-to-one in a sentence

Added to drinking water at concentrations of around one part per million, fluoride ions stick to dental plaque.
Anti-Fluoriders Are The OG Anti-Vaxxers|Michael Schulson|July 27, 2016|DAILY BEAST
In his view, a writer has only one duty: to be present in his books.
Houellebecq’s Incendiary Novel Imagines France With a Muslim President|Pierre Assouline|January 9, 2015|DAILY BEAST
Yet this, in the end, is a book from which one emerges sad, gloomy, disenchanted, at least if we agree to take it seriously.
Houellebecq’s Incendiary Novel Imagines France With a Muslim President|Pierre Assouline|January 9, 2015|DAILY BEAST
The fear of violence should not determine what one does or does not say.
Trolls and Martyrdom: Je Ne Suis Pas Charlie|Arthur Chu|January 9, 2015|DAILY BEAST

The al Qaeda-linked gunmen shot back, but only managed to injure one officer before they were taken out.
France Kills Charlie Hebdo Murderers|Nico Hines|January 9, 2015|DAILY BEAST
Practise gliding in the form of inflection, or slide, from one extreme of pitch to another.
Expressive Voice Culture|Jessie Eldridge Southwick
He alludes to it as one of their evil customs and used by them to produce insensibility.
Tobacco; Its History, Varieties, Culture, Manufacture and Commerce|E. R. Billings.
There was a rumor that Alessandro and his father had both died; but no one knew anything certainly.
Ramona|Helen Hunt Jackson
Truth is a torch, but one of enormous size; so that we slink past it in rather a blinking fashion for fear it should burn us.
Pearls of Thought|Maturin M. Ballou
Under the one-sixth they appear as slender, highly refractive fibers with double contour and, often, curled or split ends.
A Manual of Clinical Diagnosis|James Campbell Todd

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