Dictionary.com

j

Save This Word!

Symbol.
Mathematics. a unit vector on the y-axis of a coordinate system.
Engineering. the imaginary number .
QUIZ
ARE YOU A TRUE BLUE CHAMPION OF THESE "BLUE" SYNONYMS?
We could talk until we're blue in the face about this quiz on words for the color "blue," but we think you should take the quiz and find out if you're a whiz at these colorful terms.
Question 1 of 8
Which of the following words describes “sky blue”?
Meet Grammar CoachWrite or paste your essay, email, or story into Grammar Coach and get grammar helpImprove Your Writing
Meet Grammar CoachImprove Your Writing
Write or paste your essay, email, or story into Grammar Coach and get grammar help

Other definitions 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.

Other definitions for j (3 of 5)

J2

abbreviation
Physics. joule; joules.Also j

Other definitions for j (4 of 5)

J3

Symbol.
the tenth in order or in a series.
(sometimes lowercase) the medieval Roman numeral for 1.Compare Roman numerals.

Other definitions for j (5 of 5)

J.

abbreviation
Cards. Jack.
Journal.
Judge.
Justice.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

How to use j in a sentence

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.
FEEDBACK