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many-one

American  
[men-ee-wuhn, men-ee-tuh-wuhn] / ˈmɛn iˈwʌn, ˈmɛn i təˈwʌn /

adjective

Logic, Mathematics.

  1. (of a relation) having the property that each element is assigned to one element only but that many elements may be assigned to the same element.

many-one British  

adjective

  1. maths logic (of a function) associating a single element of a range with more than one member of the domain

"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

Etymology

Origin of many-one

First recorded in 1905–10

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.