I. J 1 BrE AmE , j /dʒeɪ/ noun ( plural J’s , j’s ) [uncountable and countable]
the tenth letter of the English alphabet
II. J 2 BrE AmE
the written abbreviation of joule or joules
I. J 1 BrE AmE , j /dʒeɪ/ noun ( plural J’s , j’s ) [uncountable and countable]
the tenth letter of the English alphabet
II. J 2 BrE AmE
the written abbreviation of joule or joules
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012