\ ˌwən-tə-ˈwən 
, -də- \
, -də- \Definition of one-to-one
1 : pairing each element of a set uniquely with an element of another set
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More Definitions for one-to-one
one-to-one
adjectiveEnglish Language Learners Definition of one-to-one
: involving two people who are dealing with each other directly
formal : perfectly matching one thing in a group to another thing in another group
See the full definition for one-to-one in the English Language Learners Dictionary
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Time Traveler for one-to-one
The first known use of one-to-one was in 1873
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