j

¹ American  

Symbol.

1. Mathematics.  a unit vector on the y-axis of a coordinate system.

2. Engineering.  the imaginary number .

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J ² American  

abbreviation

1. Jewish.

2. Physics.  joule; joules. Also j

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J ³ American  

Symbol.

1. the tenth in order or in a series.

2. (sometimes lowercase)  the medieval Roman numeral for 1.

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J. ⁴ American  

abbreviation

1. Cards.  Jack.

2. Journal.

3. Judge.

4. Justice.

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J ⁵ American  

[jey] / dʒeɪ /

Or j

noun

PLURAL

J's, Js, j's, js.

1. the tenth letter of the English alphabet, a consonant.

2. any spoken sound represented by the letter J or j, as in just, major, or rajah.

3. something having the shape of a J .

4. a written or printed representation of the letter J or j.

5. a device, as a printer's type, for reproducing the letter J or j.

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j ¹ British  

symbol

1. maths the unit vector along the y -axis

2. Also called: i.  obsolete  the imaginary number √–1

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J ² British  

symbol

1. cards jack

2. joule(s)

3. current density

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abbreviation

1. Japan (international car registration)

j ³ British  

/ dʒeɪ /

noun

1. the tenth letter and seventh consonant of the modern English alphabet

2. a speech sound represented by this letter, in English usually a voiced palato-alveolar affricate, as in jam

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J Scientific  

1. Abbreviation of joule

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