"For its use in the context of Computer Science, see
A lexeme (audio|En-us-lexeme.ogg|pronunciation) is an abstract unit of morphological analysis in
linguistics, that roughly corresponds to a set of forms taken by a single word. For example, in the English language, "run", "runs", "ran" and "running" are forms of the same lexeme, conventionally written as RUN. [RUN is here intended to display in small caps. Software limitations may result in its display either in full-sized capitals (RUN) or in full-sized capitals of a smaller font; either is anyway regarded as an acceptable substitute for genuine small caps.] A related concept is the lemma (or citation form), which is a particular form of a lexeme that is chosen by convention to represent a canonical form of a lexeme. Lemmas are used in dictionaries as the headwords, and other forms of a lexeme are often listed later in the entry if they are unusual in some way.
A lexeme belongs to a particular
syntactic category, has a certain meaning (semantic value), and in inflecting languages, has a corresponding inflectional paradigm; that is, a lexeme in many languages will have many different forms. For example, the lexeme RUN has a present third person singular form "runs", a present non-third-person-singular form "run" (which also functions as the past participleand non-finite form), a past form "ran", and a present participle"running". (It does not include "runner, runners, runnable," etc.) The use of the forms of a lexeme is governed by rules of grammar; in the case of English verbs such as RUN, these include subject- verbagreement and compound tenserules, which determine which form of a verb can be used in a given sentence.
lexiconconsists of lexemes.
The notion of a lexeme is very central to morphology, and thus, many other notions can be defined in terms of it. For example, the difference between
inflectionand derivation can be stated in terms of lexemes:
* Inflectional rules relate a lexeme to its forms.
* Derivational rules relate a lexeme to another lexeme.
* The root morpheme is the primary lexical unit of a word, which carries the most significant aspects of semantic content and cannot be reduced to smaller constituents. [ [http://www.sil.org/linguistics/GlossaryOfLinguisticTerms/WhatIsARoot.htm SIL dictionary of linguistic terms: What is a root?] ]
* The derivational morphemes carry only derivational information. [ [http://www.sil.org/linguistics/GlossaryOfLinguisticTerms/WhatIsADerivationalAffix.htm SIL dictionary of linguistic terms: What is a derivational affix?] ]
desinenceis composed of all inflectional morphemes, and carries only inflectional information. [ [http://www.sil.org/linguistics/GlossaryOfLinguisticTerms/WhatIsAnInflectionalAffix.htm SIL dictionary of linguistic terms: What is an inflectional affix?] ]
The compound root morpheme + derivational morphemes is often called the stem. [ [http://www.sil.org/linguistics/GlossaryOfLinguisticTerms/WhatIsAStem.htm SIL dictionary of linguistic terms: What is a stem?] ] The decomposition stem + desinence can then be used to study inflection.
* Lexical word vs. grammatical word
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Lexeme — Lexème Le lexème (aussi appelé unité lexicale par le Conseil supérieur de la langue française et de nombreux grammairiens et lexicographes) est le morphème lexical d’un lemme, c est à dire une unité de sens et de son qui n est pas fonctionnelle… … Wikipédia en Français
lexème — [ lɛksɛm ] n. m. • av. 1950; de lex(ique), d apr. morphème ♦ Ling. Morphème lexical libre (⇒ mot), ou lié (⇒ racine). ● lexème nom masculin (de lexique, d après morphème) Unité minimale de signification appartenant au lexique. ● lexème… … Encyclopédie Universelle
lexeme — 1937, from LEXICON (Cf. lexicon) + eme, ending abstracted from MORPHEME (Cf. morpheme). Related: Lexemic … Etymology dictionary
lexeme — [lek′sēm΄] n. [< Gr lexis, word (see LEXICON) + EME] Linguis. a word or stem that is a meaningful unit in a language and coincides with the abstract unit underlying a given set of inflected forms lexemic [leks′ē′mik] adj … English World dictionary
Lexème — Le lexème (aussi appelé unité lexicale par le Conseil supérieur de la langue française et de nombreux grammairiens et lexicographes) est le morphème lexical d’un lemme, c est à dire une unité de sens et de son qui n est pas fonctionnelle ou… … Wikipédia en Français
lexeme — Unite de base du lexique, dans une opposition lexique / vocabulaire, ou le lexique est mis en rapport avec la langue et le vocabulaire avec la parole. Selon les theories, cependant, le lexeme sera assimile au morpheme (morpheme lexical) ou a l… … Glossaire de linguistique computationnelle
lexeme — UK [ˈleksiːm] / US [ˈleksɪm] noun [countable] Word forms lexeme : singular lexeme plural lexemes linguistics a word or group of words that has a meaning that cannot be understood from the meaning of the parts of which it consists … English dictionary
lexeme — noun /ˈlɛksiːm/ Roughly, the set of inflected forms taken by a single word, such as the lexeme including as members run (lemma), running (inflected form), or ran , and excluding runner (derived term) … Wiktionary
lexeme — A word, in the sense of a dictionary entry. Distinct string of letters may be forms of the same lexeme (‘fills’, ‘filled’, ‘filling’); conversely, identical strings of letters (bank, the institution, bank of the river) may be forms of different… … Philosophy dictionary
lexeme — noun Etymology: Greek lexis word, speech + English eme more at lexicon Date: 1940 a meaningful linguistic unit that is an item in the vocabulary of a language • lexemic adjective … New Collegiate Dictionary