j


Symbol.

Mathematics. a unit vector on the y-axis of a coordinate system.
Engineering. the imaginary number .

QUIZZES

IS YOUR VOCABULARY AS STRONG AS A HIGH SCHOOL STUDENT? TRY THIS QUIZ TO SEE!

It may seem like fun and games but this quiz that uses vocab from popular stories will determine how much you know.
Question 1 of 10
disgruntle

Definition for j (2 of 5)

J1

or j

[ jey ]
/ dʒeɪ /

noun, plural J's or Js, j's or js.

the tenth letter of the English alphabet, a consonant.
any spoken sound represented by the letter J or j, as in just, major, or rajah.
something having the shape of a J.
a written or printed representation of the letter J or j.
a device, as a printer's type, for reproducing the letter J or j.

Definition for j (3 of 5)

J2

abbreviation

Jewish.
Physics. joule; joules.Also j

Definition for j (4 of 5)

J3

Symbol.

the tenth in order or in a series, or, when I is omitted, the ninth.
(sometimes lowercase) the medieval Roman numeral for 1.
Compare Roman numerals.

Definition for j (5 of 5)

J.

Cards. Jack.
Journal.
Judge.
Justice.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

British Dictionary definitions for j (1 of 3)

j

symbol for

maths the unit vector along the y -axis
Also called: i obsolete the imaginary number √–1

British Dictionary definitions for j (2 of 3)

j

J

/ (dʒeɪ) /

noun plural j's, J's or Js

the tenth letter and seventh consonant of the modern English alphabet
a speech sound represented by this letter, in English usually a voiced palato-alveolar affricate, as in jam

British Dictionary definitions for j (3 of 3)

J

symbol for

cards jack
joule(s)
current density

abbreviation for

Japan (international car registration)
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for j

J

abbr.

joule
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Scientific definitions for j

J

Abbreviation of joule
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.