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{{Short description|Smallest functional written unit}}
[[File:A-small glyphs.svg|thumb|Various [[Glyph|glyph]]s representing the lower case letter "a"; they are allographs of the grapheme {{angbr|a}}]]
In [[Social:Linguistics|linguistics]], a '''grapheme''' is the smallest functional unit of a [[Social:Writing system|writing system]].<ref>Coulmas, F. (1996), The Blackwell Encyclopedia of Writing Systems. Oxford: Blackwell, p. 174</ref>
The word ''grapheme'' is derived {{ety|grc|''γράφω'' (gráphō)|write}} and the suffix ''-eme'' by analogy with ''[[Social:Phoneme|phoneme]]'' and other names of emic units. The study of graphemes is called ''graphemics''. The concept of graphemes is abstract and similar to the notion in [[Computing|computing]] of a [[Character (computing)|character]]. By comparison, a specific shape that represents any particular grapheme in a given [[Typeface|typeface]] is called a [[Glyph|glyph]]. <!-- Examples go in the body for such a short article. This opening section should be no more than a concise summary of the body content, per WP:LEAD. -->

==Conceptualization==
There are two main opposing grapheme concepts.<ref>Kohrt, M. (1986), The term 'grapheme' in the history and theory of linguistics. In G. Augst (Ed.), ''New trends in graphemics and orthography''. Berlin: De Gruyter, pp. 80–96. {{doi|10.1515/9783110867329.80}}</ref>

In the so-called ''referential conception'', graphemes are interpreted as the smallest units of writing that correspond with sounds (more accurately [[Social:Phoneme|phoneme]]s). In this concept, the ''sh'' in the written English word ''shake'' would be a grapheme because it represents the phoneme /ʃ/. This referential concept is linked to the ''dependency hypothesis'' that claims that writing merely depicts speech.

By contrast, the ''analogical concept'' defines graphemes analogously to phonemes, i.e. via written minimal pairs such as ''shake'' vs. ''snake''. In this example, ''h'' and ''n'' are graphemes because they distinguish two words. This analogical concept is associated with the autonomy hypothesis which holds that writing is a system in its own right and should be studied independently from speech. Both concepts have weaknesses.<ref>Lockwood, D. G. (2001), Phoneme and grapheme: How parallel can they be? ''LACUS Forum'' 27, 307–316.</ref>

Some models adhere to both concepts simultaneously by including two individual units,<ref>Rezec, O. (2013), Ein differenzierteres Strukturmodell des deutschen Schriftsystems. ''Linguistische Berichte'' 234, pp. 227–254.</ref> which are given names such as ''graphemic grapheme'' for the grapheme according to the analogical conception (''h'' in ''shake''), and ''phonological-fit grapheme'' for the grapheme according to the referential concept (''sh'' in ''shake'').<ref>Herrick, E. M. (1994), Of course a structural graphemics is possible! ''LACUS Forum'' 21, pp. 413–424.</ref>

In newer concepts, in which the grapheme is interpreted [[Philosophy:Semiotics|semiotically]] as a dyadic linguistic sign,<ref>Fedorova, L. (2013), The development of graphic representation in abugida writing: The akshara’s grammar. ''Lingua Posnaniensis'' 55:2, pp. 49–66. {{doi|10.2478/linpo-2013-0013}}</ref> it is defined as a minimal unit of writing that is both lexically distinctive and corresponds with a linguistic unit ([[Social:Phoneme|phoneme]], syllable, or [[Social:Morpheme|morpheme]]).<ref>Meletis, D. (2019), The grapheme as a universal basic unit of writing. ''Writing Systems Research''. {{doi|10.1080/17586801.2019.1697412}}</ref>

==Notation==
Graphemes are often notated within angle brackets: {{angbr|a}}, {{angbr|b}}, etc.<ref name="Cambridge">The Cambridge Encyclopedia of Language, second edition, Cambridge University Press, 1997, p. 196</ref> This is analogous to both the slash notation ({{IPA|/a/}}, {{IPA|/b/}}) used for [[Social:Phoneme|phoneme]]s and to the square bracket notation used for phonetic transcriptions ({{IPA|[a]}}, {{IPA|[b]}}).

==Glyphs==
{{main|Glyph|Social:Allograph}}
In the same way that the surface forms of [[Social:Phoneme|phoneme]]s are speech sounds or phones (and different phones representing the same phoneme are called allophones), the surface forms of graphemes are [[Glyph|glyph]]s (sometimes ''graphs''), namely concrete written representations of symbols (and different glyphs representing the same grapheme are called [[Social:Allograph|allograph]]s).

Thus, a grapheme can be regarded as an [[Philosophy:Abstraction|abstraction]] of a collection of glyphs that are all functionally equivalent.

For example, in written English (or other languages using the Latin alphabet), there are two different physical representations of the lowercase Latin letter "a": "<big>a</big>" and "<big>ɑ</big>". Since, however, the substitution of either of them for the other cannot change the meaning of a word, they are considered to be allographs of the same grapheme, which can be written {{angbr|a}}. Similarly, the grapheme corresponding to "Arabic numeral zero" has a unique semantic identity and Unicode value {{code|U+0030}} but exhibits variation in the form of [[Slashed zero|slashed zero]]. Italic and bold face forms are also allographic, as is the variation seen in serif (as in [[Times New Roman]]) versus sans-serif (as in Helvetica) forms.

There is some disagreement as to whether capital and lower case letters are allographs or distinct graphemes. Capitals are generally found in certain triggering contexts that do not change the meaning of a word: a proper name, for example, or at the beginning of a sentence, or all caps in a newspaper headline. In other contexts, capitalization can determine meaning: compare, for example [[Social:Polish language|Polish]] and polish: the former is a language, the latter is for shining shoes.

Some linguists consider digraphs like the {{angbr|sh}} in ''ship'' to be distinct graphemes, but these are generally analyzed as sequences of graphemes. Non-stylistic [[Social:Typographic ligature|ligatures]], however, such as {{angbr|æ}}, are distinct graphemes, as are various letters with distinctive diacritics, such as {{angbr|ç}}.

Identical glyphs may not always represent the same grapheme. For example, the three letters {{angbr|A}}, {{angbr|А}} and {{angbr|Α}} appear identical but each has a different meaning: in order, they are the Latin letter A, the Cyrillic letter Azǔ/Азъ and the Greek letter Alpha. Each has its own [[Code point|code point]] in Unicode: {{unichar|0041|Latin capital letter A}}, {{unichar|0410|Cyrillic capital letter A}} and {{unichar|0391|Greek capital letter alpha}}.

==Types of grapheme==
The principal types of graphemes are logograms (more accurately termed morphograms<ref>Joyce, T. (2011), The significance of the morphographic principle for the classification of writing systems, ''Written Language and Literacy'' 14:1, pp. 58–81. {{doi|10.1075/wll.14.1.04joy}}</ref>), which represent words or [[Social:Morpheme|morpheme]]s (for example [[Social:Chinese characters|Chinese characters]], the [[Ampersand|ampersand]] "&" representing the word ''and'', [[Arabic numerals]]); syllabic characters, representing syllables (as in Japanese kana); and [[Social:Alphabet|alphabet]]ic letters, corresponding roughly to [[Social:Phoneme|phoneme]]s (see next section). For a full discussion of the different types, see {{section link|Writing system|Functional classification}}.


==Relationship with phonemes==
As mentioned in the previous section, in languages that use [[Social:Alphabet|alphabet]]ic writing systems, many of the graphemes stand in principle for the [[Social:Phoneme|phoneme]]s (significant sounds) of the language. In practice, however, the [[Social:Orthography|orthographies]] of such languages entail at least a certain amount of deviation from the ideal of exact grapheme–phoneme correspondence. A phoneme may be represented by a multigraph (sequence of more than one grapheme), as the digraph ''sh'' represents a single sound in English (and sometimes a single grapheme may represent more than one phoneme, as with the Russian letter я or the Spanish c). Some graphemes may not represent any sound at all (like the ''b'' in English ''debt'' or the ''h'' in all Spanish words containing the said letter), and often the rules of correspondence between graphemes and phonemes become complex or irregular, particularly as a result of historical sound changes that are not necessarily reflected in spelling. "Shallow" orthographies such as those of standard [[Social:Spanish language|Spanish]] and [[Social:Finnish language|Finnish]] have relatively regular (though not always one-to-one) correspondence between graphemes and phonemes, while those of French and English have much less regular correspondence, and are known as deep orthographies.

Multigraphs representing a single phoneme are normally treated as combinations of separate letters, not as graphemes in their own right. However, in some languages a multigraph may be treated as a single unit for the purposes of collation; for example, in a [[Social:Czech language|Czech]] dictionary, the section for words that start with {{angbr|ch}} comes after that for {{angbr|h}}.<ref>{{cite web|last=Zeman|first=Dan|title=Czech Alphabet, Code Page, Keyboard, and Sorting Order|url=http://old-site.clsp.jhu.edu/ws98/projects/nlp/doc/czech_env/czech-info.html|access-date=31 March 2012|publisher=Old-site.clsp.jhu.edu|archive-url=https://web.archive.org/web/20120415123555/http://old-site.clsp.jhu.edu/ws98/projects/nlp/doc/czech_env/czech-info.html|archive-date=15 April 2012|url-status=dead}}</ref> For more examples, see {{section link|Alphabetical order|Language-specific conventions}}.

==See also==

* {{Annotated link |Character (computing)}}
* {{Annotated link |Grapheme–color synesthesia}}
* {{Annotated link |Sign (semiotics)}}

==References==
{{Reflist}}


[[Category:Linguistics terminology]]

{{Sourceattribution|Grapheme}}