Definition of monomorphemic in English:

monomorphemic

adjective

Linguistics
  • Consisting of a single morpheme.

    • ‘It would seem that the high-frequency past tenses were being processed rather like the monomorphemic words, suggesting that they were being stored as preformed units.’
    • ‘In assigning the heavier weight to the following consonant and the lighter one to the morpheme boundary, the model predicts that more deletions will occur in monomorphemic than bimorphemic clusters.’

Pronunciation

monomorphemic

/ˌmɒnə(ʊ)mɔːˈfiːmɪk/