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morphophoneme

[mawr-fuh-foh-neem, mawr-foh-]
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noun Linguistics.
  1. an abstract phonological unit representing corresponding phonemes in different allomorphs of one morpheme. In English the symbol F may be used to represent a morphophoneme occurring in two related allomorphs, as f in leaf, but v in the plural leaves.
  2. a phonological entity comprising a bundle of distinctive features used in the representation of a morpheme.
  3. a symbol for a phonological alternation.
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Origin of morphophoneme

1930–35; morpho- (as combining form for morpheme) + phoneme
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for morphophoneme

morphophoneme

noun
  1. linguistics the set of phonemes or sequences of phonemes that constitute the various allomorphs of a morpheme
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Word Origin

C20: from morpheme + phoneme
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