j

1 of 3

noun

ˈjā 

plural j's or js ˈjāz 

often capitalized, often attributive

1

a

: the 10th letter of the English alphabet

b

: a speech counterpart of orthographic j (as j in jump)

2

a

: a graphic device for reproducing the letter j

b

: a unit vector parallel to the y-axis

3

: one designated j especially as the 10th in order or class

4

: something shaped like the letter J

5

J plural J's or Js, basketball, informal : jump shot

… she flicked a pass to the corner, where Lawson nailed a J to tie the game at 51.

—Hank Hersch

j

2 of 3

abbreviation (1)

1

jack

2

journal

3

judge; justice

J

3 of 3

abbreviation (2)

joule

Examples of j in a Sentence

Noun

a word that begins with a j

a word that begins with j

Word History

First Known Use

Noun

15th century, in the meaning defined at sense 1a

Kids Definition

j

noun

ˈjā

often capitalized

: the 10th letter of the English alphabet

Medical Definition

J

symbol

mechanical equivalent of heat

Legal Definition

J.

abbreviation

1

judge

2

justice

3

judgment