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English definition of “one-to-one”

one-to-one

adjective uk   /ˌwʌn.təˈwʌn/ us  

one-to-one adjective (CONNECTION)

Something that is in a one-to-one relationship with another thing strongly influences the way that the other thing changes: Is there a one-to-one relationship between pay levels and productivity?

one-to-one adjective (SAME VALUE)

used to describe something that has the same value as another thing: The dollar was fixed to the peso at a one-to-one rate.

one-to-one adjective (TWO PEOPLE)

[before noun] UK (US one-on-one) A one-to-one activity involves two people talking directly, usually with one teaching or giving information to the other: These children have special educational needs and require one-to-one attention.

one-to-one

adverb uk   /ˌwʌn.təˈwʌn/ us  
UK (US one-on-one) If two people discuss something one-to-one, they discuss it directly, without involving anyone else: It's best to talk to him about the problem one-to-one.

one-to-one

noun [C] uk   /ˌwʌn.təˈwʌn/ (plural one-to-ones) us  
UK (US one-on-one) a discussion or activity that involves two people talking directly, usually with one teaching or giving information to the other: I have regular one-to-ones with my manager.
(Definition of one-to-one from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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