On this Wikipedia the language links are at the top of the page across from the article title. This is the latest a.j. cook revision, reviewed on 18 January 2023.

This article is about the tenth letter of the Latin alphabet. For the programming language, see J Sharp. J, or j, is the tenth letter in the Latin alphabet, used in the modern English alphabet, the alphabets of other western European languages and others worldwide. The letter J used to be used as the swash letter I, used for the letter I at the end of Roman numerals when following another I, as in XXIIJ or xxiij instead of XXIII or xxiii for the Roman numeral twenty-three.

A distinctive usage emerged in Middle High German. It is, however, quite common in proper nouns, especially personal names. Latin to some kind of fricative. 1 Also for encodings based on ASCII, including the DOS, Windows, ISO-8859 and Macintosh families of encodings. It is primarily used in Landsmålsalfabet and in mathematics. It is called “Yot” in the Unicode standard, after the German name of the letter J. 037F with the release of version 7.

In international licence plate codes, J stands for Japan. In mathematics, j is one of the three imaginary units of quaternions. Also in mathematics, j is one of the three unit vectors. In the Metric system, J is the symbol for the joule, the SI derived unit for energy. J” for example “J123 XYZ” would correspond to a vehicle registered between August 1, 1991 and July 31, 1992. Subscription or participating institution membership required. De le lettere nuωvamente aggiunte ne la lingua Italiana in Italian Wikisource.

The Cambridge History of the English Language. Accents of English 1: An Introduction. The Sounds of Sicilian: A Pronunciation Guide. Nick Nicholas, “Yot” Archived 2012-08-05 at archive.