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one-many

[wuhn-men-ee; usually read as wuhn-tuh-men-ee]
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adjective Logic, Mathematics.
  1. (of a relation) having the property that an element may be assigned to several elements but that given an element, only one may be assigned to it.

Origin of one-many

First recorded in 1905–10
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for one-many

one-many

adjective
  1. maths logic (of a relation) holding between more than one ordered pair of elements with the same first member
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