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 … See more

In English, ⟨j⟩ most commonly represents the affricate /dʒ/. In Old English, /dʒ/ was represented orthographically with ⟨cᵹ⟩ (equivalent to ⟨cg⟩, as ⟨ᵹ⟩ in Old English was simply the regular form of the letter G, called … See more

• 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.… See more

• 𐤉 : Semitic letter Yodh, from which the following symbols originally derive
• I i : Latin letter I, from which J derives
• ȷ : Dotless j
• ᶡ : Modifier letter small dotless j with stroke … See more

Also for encodings based on ASCII, including the DOS, Windows, ISO-8859 and Macintosh families of encodings.
Unicode also has a dotless variant, ȷ (U+0237). It is primarily used in Landsmålsalfabet and … See more

• The dictionary definition of J at Wiktionary
• The dictionary definition of j at Wiktionary
• "J" . Encyclopædia Britannica. Vol. 15 (11th ed.). 1911.… See more