A diacritic is a glyph added to a letter or to a basic glyph. The term derives from the Ancient Greek διακριτικός, from διακρίνω. The word diacritic is a noun, though it is sometimes used in an attributive sense, whereas diacritical is only an adjective. Some diacritics, such as the acute ⟨á⟩, grave ⟨à⟩, and circumflex ⟨â⟩, are often called accents. Diacritics may appear above or below a letter or in some other position such as within the letter or between two letters.
The International Phonetic Alphabet (IPA) is an alphabetic system of phonetic notation based primarily on the Latin script. It was devised by the International Phonetic Association in the late 19th century as a standardized representation of speech sounds in written form. The IPA is used by lexicographers, foreign language students and teachers, linguists, speech–language pathologists, singers, actors, constructed language creators, and translators.
N, or n, is the fourteenth letter of the Latin alphabet, used in the modern English alphabet, the alphabets of other western European languages, and others worldwide. Its name in English is en, plural ens.
R, or r, is the eighteenth letter of the Latin alphabet, used in the modern English alphabet, the alphabets of other western European languages and others worldwide. Its name in English is ar, plural ars, or in Ireland or.
T, or t, is the twentieth letter of the Latin alphabet, used in the modern English alphabet, the alphabets of other western European languages and others worldwide. Its name in English is tee, plural tees.
The tilde˜ or ~, is a grapheme with a number of uses. The name of the character came into English from Spanish, which in turn came from the Latin titulus, meaning 'title' or 'superscription'. Its primary use is as a diacritic (accent) in combination with a base letter; but, for historical reasons, it is also used in standalone form within a variety of contexts.
Unicode has subscripted and superscripted versions of a number of characters including a full set of Arabic numerals. These characters allow any polynomial, chemical and certain other equations to be represented in plain text without using any form of markup like HTML or TeX.
The letter Ʊ, called horseshoe or sometimes bucket, inverted omega or Latin upsilon, is a letter of the International Phonetic Alphabet used to transcribe a near-close near-back rounded vowel. Graphically, the lower case is a turned small-capital Greek letter omega (Ω) in many typefaces, and historically it derives from a small-capital Latin U (ᴜ), with the serifs exaggerated to make them more visible. However, Geoffrey Pullum interpreted it as an IPA variant of the Greek letter upsilon (υ) and called it Latin upsilon, the name that would be adopted by Unicode, though in IPA an actual Greek upsilon is also used for the voiced labiodental approximant; Pullum called this letter script V and Unicode calls it V with hook.
L, or l, is the twelfth letter of the Latin alphabet, used in the modern English alphabet, the alphabets of other western European languages and others worldwide. Its name in English is el, plural els.
The palatal hook is a type of hook diacritic formerly used in the International Phonetic Alphabet to represent palatalized consonants. It is a small, leftwards-facing hook joined to the bottom-right side of a letter, and is distinguished from various other hooks indicating retroflexion, etc. Theoretically, it could be used on all IPA consonant letters except for those for palatal consonants, but it is not attested on all of the IPA letters of its era. It was withdrawn by the IPA in 1989, in favour of a superscript j following the consonant.
Unicode supports several phonetic scripts and notations through its existing scripts and the addition of extra blocks with phonetic characters. These phonetic characters are derived from an existing script, usually Latin, Greek or Cyrillic. Apart from the International Phonetic Alphabet (IPA), extensions to the IPA and obsolete and nonstandard IPA symbols, these blocks also contain characters from the Uralic Phonetic Alphabet and the Americanist Phonetic Alphabet.
I, or i, is the ninth letter and the third vowel letter of the Latin alphabet, used in the modern English alphabet, the alphabets of other western European languages and others worldwide. Its name in English is i, plural ies.
Teuthonista is a phonetic transcription system used predominantly for the transcription of (High) German dialects. It is very similar to other Central European transcription systems from the early 20th century. The base characters are mostly based on the Latin alphabet, which can be modified by various diacritics.
Inverted breve or arch is a diacritical mark, shaped like the top half of a circle ( ̑ ), that is, like an upside-down breve (˘). It looks similar to the circumflex (ˆ), which has a sharp tip, while the inverted breve is rounded:.
In typesetting, the hook or tail is a diacritic mark attached to letters in many alphabets. In shape it looks like a hook and it can be attached below as a descender, on top as an ascender and sometimes to the side. The orientation of the hook can change its meaning: when it is below and curls to the left it can be interpreted as a palatal hook, and when it curls to the right is called hook tail or tail and can be interpreted as a retroflex hook. It should not be mistaken with the hook above, a diacritical mark used in Vietnamese, or the rhotic hook, used in the International Phonetic Alphabet.
IPA Braille is the modern standard Braille encoding of the International Phonetic Alphabet (IPA), as recognized by the International Council on English Braille.
Dania is the traditional linguistic transcription system used in Denmark to describe the Danish language. It was invented by Danish linguist Otto Jespersen and published in 1890 in the Dania, Tidsskrift for folkemål og folkeminder magazine from which the system was named.
The Phonetic Symbol Guide is a book by Geoffrey Pullum and William Ladusaw that explains the histories and uses of the symbols of various phonetic transcription conventions. It was published in 1986, with a second edition in 1996, by the University of Chicago Press. Symbols include letters and diacritics of the International Phonetic Alphabet and Americanist phonetic notation, though not of the Uralic Phonetic Alphabet. The Guide was consulted by the International Phonetic Association when they established names and numerical codes for the International Phonetic Alphabet and was the basis for the characters of the TIPA set of phonetic fonts.
In the days of printing with metal type sorts, it was common to rotate letters and digits 180° to create new symbols. This was done for example with the Palaeotype alphabet, the International Phonetic Alphabet, the Fraser script, and for some mathematical symbols. Perhaps the earliest instance of this that is still in use was turned e for schwa.
