American Heritage® Dictionary of the English Language, Fourth Edition
- adj. Allowing the pairing of each member of a class uniquely with a member of another class.
- adj. Mathematics Relating to or being a correspondence that assigns to different members of one set different members of another set.
Century Dictionary and Cyclopedia
- Same as one-one.
- n. A personal relationship between two people.
- adj. Matching each member of one set with a member of another set.
- adj. chiefly UK Involving direct communication between two people. Used especially to refer to situations in which one person is teaching one other person.
- adj. mathematics, of a function Injective, being an injection: having the property that no two elements of the domain are mapped to the same image.
- adj. used of relations such that each member of one set is associated with one member of a second set
“About fifteen years ago, marketers started using the term "one-to-one marketing" or 1:1 marketing to describe a CRM strategy that emphasized this kind of highly personalized interaction.”
“More than 600 public school districts have begun what they call "one-to-one" programs, in which at least one classroom of students is getting iPads for each child to use throughout the day.”
“Apple officials say they know of more than 600 districts that have launched what are called "one-to-one" programs, in which at least one classroom of students is getting iPads for each student to use throughout the school day.”
“So there is fructose in table sugar, too, in a one-to-one ratio with glucose.”
“It wasn't too long ago that the parity pontificators were out in full force claiming that the European currency would trade one-to-one with the U.S. dollar.”
“Maybe working with a writing coach one-to-one would suite you better?”
“There is a one-to-one relationship," Mr. Pijbes adds.”
“– The occasional brief one-to-one exchange via Twitter can be helpful, but constant use of Twitter for a conversation that could be taken off-line or private (via DM) is not going to win you (m) any friends.”
“The service provides one-to-one advice and support to people in several languages to help manage their condition.”
“He has moved to end the "ringfencing" of grants to schools, meaning they no longer have defined sums that they have to spend on activities such as sport or one-to-one tuition; they get one pot to spend as they see fit.”
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