Definition of morphophoneme in English:

morphophoneme

noun

Phonetics
  • Any of the variant forms of a phoneme as determined by the context in which it is used.

    • ‘They are complementary, since for each environment of the unit, its morphophonemes indicate the segments in the corresponding parts of that member of the morpheme which occurs in that environment.’
    • ‘Stress has its own tier, and I will identify this feature specifically, since stress will determine the choice of the morphophoneme.’
    • ‘This tendency of leaving out the morphophoneme " t’ becomes more and more common.’

Pronunciation:

morphophoneme

/ˌmôrfəˈfōˌnēm/