Meaning of J in English

J

1. Jewish.

2. Also, j Physics. joule; joules.

Symbol.

1. the tenth in order or in a series, or, when I is omitted, the ninth.

2. ( sometimes l.c. ) the medieval Roman numeral for 1. Cf. Roman numerals .

Random House Webster's Unabridged English dictionary.      Полный английский словарь Вебстер - Random House .