There are 3 main definitions of j in English:

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j 1

Pronunciation: /dʒeɪ/

symbol

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

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There are 3 main definitions of j in English:

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J 2

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

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There are 3 main definitions of j in English:

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J 3

Pronunciation: /dʒeɪ/

abbreviation

1Jack (used in describing play in card games).
2Japan (international vehicle registration).
3 Physics Joule(s).
4(In titles) Journal (of): J. Biol. Chem

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