one-to-one

[ wuhn-tuh-wuhn ]

adjective

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

one-to-one

adjective

1. (of two or more things) corresponding exactly
2. denoting a relationship or encounter in which someone is involved with only one other person

   one-to-one tuition

3. maths characterized by or involving the pairing of each member of one set with only one member of another set, without remainder

noun

1. a conversation, encounter, or relationship between two people

Word History and Origins

Origin of one-to-one¹

First recorded in 1870–75

Example Sentences

The very fact of depicting at one-to-one carries special representational weight.

From The Daily Beast

“The closest I came to discussing this was in February 2009 when I had a one-to-one meeting,” Coltart said.

From The Daily Beast

One-to-one relationships beg for attention as your ruler Pluto is challenged by Venus.

From The Daily Beast

Here are a few basic suggestions: In baking, sorghum can be used in place of molasses on a one-to-one basis.

From The Daily Beast

The transformer below this has a one-to-one ratio, and is called the insulating transformer.

From Project Gutenberg

But there is not a one-to-one correspondence between sunspots and S-Regions.

From Project Gutenberg

The ambition of the World Wide Web is to enable meaningful one-to-one and one-to-many interactions.

From Project Gutenberg

So by their one-to-one logic we should either hate back or go away.

From Project Gutenberg