There are 3 main definitions of j in English:

j1

Line breaks: j
Pronunciation: /dʒeɪ
 
/

symbol

(j)
(In electrical engineering and electronics) the imaginary quantity equal to the square root of minus one. Compare with i.

Definition of j in:

There are 3 main definitions of j in English:

J2

Line breaks: J
Pronunciation: /dʒeɪ
 
/
(also j)

noun (plural Js or J's)

1The tenth letter of the alphabet.
1.1Denoting the next after I (or H if I is omitted) in a set of items, categories, etc.
2 (J) A shape like that of a capital J (without a crosspiece).
3 archaic Used instead of I as the Roman numeral for one in final position: between ij and iij of the clock

Definition of j in:

There are 3 main definitions of j in English:

J3

Line breaks: J
Pronunciation: /dʒeɪ
 
/

abbreviation

1Jack (used in describing play in card games).
1.2 Physics Joule(s).
1.3(In titles) Journal (of): J. Biol. Chem

Definition of j in: