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Mean length of utterance (or MLU) is a measure of linguistic productivity in children.It is traditionally calculated by collecting 100 utterances spoken by a child and dividing the number of morphemes by the number of utterances.
A zero-morpheme is a type of morpheme that carries semantic meaning but is not represented by auditory phoneme. A word with a zero-morpheme is analyzed as having the morpheme for grammatical purposes, but the morpheme is not realized in speech. They are often represented by /∅/ within glosses. [7] Generally, such morphemes have no visible ...
Morphology also analyzes how words behave as parts of speech, and how they may be inflected to express grammatical categories including number, tense, and aspect. Concepts such as productivity are concerned with how speakers create words in specific contexts, which evolves over the history of a language.
In linguistics, a bound morpheme is a morpheme (the elementary unit of morphosyntax) that can appear only as part of a larger expression, while a free morpheme (or unbound morpheme) is one that can stand alone. [1] A bound morpheme is a type of bound form, and a free morpheme is a type of free form. [2]
Greek Morphemes, Khoff, Mountainside Middle School English vocabulary elements , Keith M. Denning, Brett Kessler, William R. Leben, William Ronald Leben, Oxford University Press US, 2007, 320pp, p. 127, ISBN 978-0-19-516802-0 at Google Books
Synthetic languages form words by affixing a given number of dependent morphemes to a root morpheme. The morphemes may be distinguishable from the root, or they may not. They may be fused with it or among themselves (in that multiple pieces of grammatical information may potentially be packed into one morpheme).
The synthetic index is the average number of morphemes per word, with the lowest conceivable value equal to 1 for isolating (analytic) languages and real-life values rarely exceeding 3. The compounding index is equal to the average number of root morphemes per word (as opposed to derivational and inflectional morphemes).
For example, the derivation of the word uncommon from common + un-(a derivational morpheme) does not change its part of speech (both are adjectives). An important distinction between derivational and inflectional morphology lies in the content/function of a listeme [clarification needed]. Derivational morphology changes both the meaning and the ...