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Xi (/ z aɪ / ZY or /(k) s aɪ / (K)SY; [1] [2] uppercase Ξ, lowercase ξ; Greek: ξι) is the fourteenth letter of the Greek alphabet, representing the voiceless consonant cluster. Its name is pronounced in Modern Greek. In the system of Greek numerals, it has a value of 60. Xi was derived from the Phoenician letter samekh.
The Greek alphabet has been used to write the Greek language since the late 9th or early 8th century BC. [2] [3] It was derived from the earlier Phoenician alphabet, [4] and is the earliest known alphabetic script to have developed distinct letters for consonants as well as vowels. [5]
This is a list of letters of the Greek alphabet. The definition of a Greek letter for this list is a character encoded in the Unicode standard that a has script property of "Greek" and the general category of "Letter". An overview of the distribution of Greek letters is given in Greek script in Unicode.
The OpenType font format has the feature tag "mgrk" ("Mathematical Greek") to identify a glyph as representing a Greek letter to be used in mathematical (as opposed to Greek language) contexts. The table below shows a comparison of Greek letters rendered in TeX and HTML. The font used in the TeX rendering is an italic style.
The Ancient Greek pronunciation shown here is a reconstruction of the Attic dialect in the 5th century BC. For other Ancient Greek dialects, such as Doric, Aeolic, or Koine Greek, please use |generic=yes. For a guide to adding IPA characters to Wikipedia articles, see Template:IPA and Wikipedia:Manual of Style/Pronunciation § Entering IPA ...
The letter lambda λ probably represented a lateral ("clear") as in Modern Greek and most European languages, rather than a velarized ("dark") as in English in coda position and Balto-Slavic languages. The letter rho ρ was pronounced as an alveolar trill [r], as in Italian or Modern Greek rather than as in standard varieties of English or French.
In ancient times, some local forms of the Greek alphabet used the chi instead of xi to represent the /ks/ sound. This was borrowed into the early Latin language, which led to the use of the letter X for the same sound in Latin, and many modern languages that use the Latin alphabet .
Xi is the 14th letter of the Greek alphabet. Xi may refer to: Arts and entertainment. Xi (alternate reality game), a console-based game;