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morpheme

/ˌmɔrˈfim/
/ˈmɔfim/
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Other forms: morphemes

In linguistics, the smallest unit of language or grammar is called a morpheme. You can break words down into morphemes — like the -s at the end of a noun that tells you it's plural or the -ly at the end of a word that shows it's an adverb.

While some words can be divided into two or more morphemes, others consist of a single morpheme. The word dog, for example, is considered a "free" morpheme, because it can stand alone. Prefixes and suffixes like un- and -ing, are "bound" morphemes, dependent for meaning on other morphemes. A linguist coined the word in 1895, modeling it after phoneme, "distinct unit of sound," and adding the Greek morphe, "form or shape."

Definitions of morpheme
  1. noun
    minimal meaningful language unit; it cannot be divided into smaller meaningful units
    see moresee less
    types:
    allomorph
    a variant phonological representation of a morpheme
    free form, free morpheme
    a morpheme that can occur alone
    bound form, bound morpheme
    a morpheme that occurs only as part of a larger construction; eg an -s at the end of plural nouns
    classifier
    a word or morpheme used in some languages in certain contexts (such as counting) to indicate the semantic class to which the counted item belongs
    ending, termination
    the end of a word (a suffix or inflectional ending or final morpheme)
    combining form
    a bound form used only in compounds
    affix
    a linguistic element added to a word to produce an inflected or derived form
    postfix, suffix
    an affix that is added at the end of the word
    inflectional ending, inflectional suffix
    an inflection that is added at the end of a root word
    morphophoneme
    (linguistics) the phonemes (or strings of phonemes) that constitute the various allomorphs of a morpheme
    type of:
    language unit, linguistic unit
    one of the natural units into which linguistic messages can be analyzed
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