a pair of words, as pin and bin, or bet and bed, differing only by one sound in the same position in each word, especially when such a pair is taken as evidence for the existence of a phonemic contrast between the two sounds.
Origin of minimal pair
First recorded in 1940–45
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
linguistics a pair of speech elements in a given language differing in only one respect and thus serving to identify minimum units such as phonemes, morphemes, etc. For example, tin and din constitute a minimal pair in English
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