morpheme
Pronunciation: /ˈmɔrfiːm/
The smallest meaningful unit in language, including root words, prefixes, suffixes, and grammatical markers.
Full Definition
A morpheme is the smallest grammatical unit in a language that carries meaning or serves a grammatical function. Morphemes can be free (standalone words like 'cat' or 'run') or bound (prefixes, suffixes, or grammatical markers that must attach to other morphemes). Speech-language pathologists analyze morpheme use when assessing grammatical development, calculating measures like Mean Length of Utterance (MLU), and planning intervention for language disorders. Understanding morphology is crucial for addressing vocabulary development, reading comprehension, and expressive language skills. Children typically develop morphological awareness gradually, learning basic inflections before more complex derivational morphemes.
Usage
Usage note: Essential for MLU calculations and grammatical development assessment.
In Context
- "The child demonstrated difficulty with bound morphemes, particularly past tense -ed markers." — Language assessment findings
- "Morpheme analysis revealed strengths in free morphemes but deficits in grammatical morphology." — Treatment planning document