j

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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”?

navy

beryl

azure

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Words nearby j

Iztaccihuatl, Izvestia, Izzak, izzard, izzat, j, ja, jaap, jab, Jabal, Jabalpur

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

Jewish (def. 1).

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)

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

I meet Otis J. the night he arrives at “The Castle,” a West Harlem halfway house for newly-released convicts.
His First Day Out Of Jail After 40 Years: Adjusting To Life Outside|Justin Rohrlich|January 3, 2015|DAILY BEAST
J Crew did not give back the money it incidentally made off of Mrs. Obama.
One Vogue Cover Doesn’t Solve Fashion’s Big Race Problem|Danielle Belton|January 2, 2015|DAILY BEAST
We live in a world where a J. Edgar Hoover biopic got made before a Martin Luther King Jr. one.
Ava DuVernay on ‘Selma,’ the Racist Sony Emails, and Making Golden Globes History|Marlow Stern|December 15, 2014|DAILY BEAST
READ MORE: Shocking New Reveals From Sony Hack: J. Law, Pitt, Clooney, and Star Wars Which brings us to the inimitable Kanye West.
Exclusive: Sony Emails Reveal Destiny’s Child and Kanye West Movies, and Spidey Cameo in Capt. 3|William Boot|December 14, 2014|DAILY BEAST

She said Wright, whom the girl refers to as the shorthand “J,” also sensed that the heat was on.
The Navy ‘Hero’ Who Pimped an HIV-Positive Teen|M.L. Nestel|December 11, 2014|DAILY BEAST
I was an Innkeeper, who loved to carouse; J was a Joiner, and built up a house.
Boys and Girls Bookshelf; a Practical Plan of Character Building, Volume I (of 17)|Various
Mais ce n'est pas de merveille; car, comme j'ay dict, ils sont enfans.
The Jesuit Relations and Allied Documents, Vol. II: Acadia, 1612-1614|Various
Neantmoins le vieil Membertou, pere du malade, conceut asss l'affaire, et me promit qu'on s'arresteroit tout ce que j'en dirois.
The Jesuit Relations and Allied Documents, Vol. II: Acadia, 1612-1614|Various
Ce fut lors que nos gens se penserent estre veritablement prins, et j tout n'estoit que clameur et tumulte.
The Jesuit Relations and Allied Documents, Vol. II: Acadia, 1612-1614|Various
On dit neantmoins que les Armouchiquois se craignirent de tels voysins, et cette cause firent mourir ce capitaine que j'ay dit.
The Jesuit Relations and Allied Documents, Vol. II: Acadia, 1612-1614|Various

British Dictionary definitions for j (1 of 3)

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

/ (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)

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

abbr.

joule

Scientific definitions for j

Abbreviation of joule