Noun
(linguistics) the phonemes (or strings of phonemes) that constitute the various allomorphs of a morpheme
Source: WordNetA morphophoneme within a morpheme can be expressed in different ways in different allomorphs of that morpheme (according to morphophonological rules). Source: Internet
Morphophonemes main A morphophoneme is a theoretical unit at a deeper level of abstraction than traditional phonemes, and is taken to be a unit from which morphemes are built up. Source: Internet