j
a unit vector on the y-axis of a coordinate system.
j
1 AmericanSymbol.
-
Mathematics. a unit vector on the y-axis of a coordinate system.
-
Engineering. the imaginary number .
J
2
American
[jey]
/ dʒeɪ /
Or
j
noun
J's,
plural
Js,
plural
j's,
plural
js
plural
-
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.
J
4
American
Symbol.
-
the tenth in order or in a series.
-
(sometimes lowercase) the medieval Roman numeral for 1.
J.
5
American
abbreviation
-
Cards. Jack.
-
Journal.
-
Judge.
-
Justice.
J
1
British
symbol
-
cards jack
-
joule(s)
-
current density
abbreviation
j
2
British
symbol
-
maths the unit vector along the y -axis
-
Also called: i. obsolete the imaginary number √–1
j
3
British
/ dʒeɪ /
noun
-
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
J
Scientific
Other Word Forms
Noun Inflected Forms
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
See Examples For:
The memes typically used goofy broken English to reveal the inner thoughts of Kabosu and other shiba inu "doge" - pronounced like pizza "dough" but with a "j" at the end.
From BBC ● May 24, 2024
Choose a value from 0 to 9 for i, j and k.
From Scientific American ● Oct. 24, 2023
Repeat this algorithm for all one-digit numerical values of i, j and k, and the result will always be either a happy or a sad number.
From Scientific American ● Oct. 24, 2023
Trubisky j oined the Steelers in March 2022 after a stint backing up Josh Allen in Buffalo.
From Washington Times ● May 19, 2023
“We should j never have sent out rangers.”
From "A Dance with Dragons" by George R. R. Martin
Since then, El Malilla has expanded the scope of reggaeton Mexa following collaborations with Puerto Rican pioneers such as Jowell y Randy and Colombian superstar J Balvin.
From Los Angeles Times ● Jul. 20, 2026
Singer-songwriter Jessie J, who received the outstanding achievement prize, told BBC News that music had helped her through two years of treatment for breast cancer, including a mastectomy.
From BBC ● Jul. 10, 2026
Spain will face the second-place finisher in Group J, which will be determined late Saturday by the match between Algeria and Austria.
From Los Angeles Times ● Jun. 27, 2026
In Group J, Austria and Algeria - second and third respectively on three points - meet in their final group game, so Scotland would not want that to end in a draw.
From BBC ● Jun. 24, 2026
I guess Aunt J, Zora, and Wes were right—the Faith & Honor people really are planning to gather and march.
From "Split the Sky" by Marie Arnold
Tremors are a common symptom of Parkinson’s disease, which also notably afflicts “Back to the Future” star Michael J. Fox.
From Los Angeles Times ● Jul. 27, 2026
Regret is often an internal signal that a behavior was inconsistent with our goals or values, says J. Kim Penberthy, a professor of psychiatry and neurobehavioral sciences at the University of Virginia.
From MarketWatch ● Jul. 24, 2026
Michael J. Wolf, CEO of Activate Consulting, said Peacock’s first profit proves that live sports and premium programming “remain the single most powerful anchors for consumer attention and subscriber growth.”
From Los Angeles Times ● Jul. 23, 2026
At J. Michael Bloom & Associates, I found Mickey Shera, who invited me to drop by.
From The Wall Street Journal ● Jul. 14, 2026
Kelly J. is the kind of person who would give private letters to her friends to laugh at during our hour in the library—which doesn’t have any books about any Persian stories anyway.
From "Everything Sad Is Untrue" by Daniel Nayeri
This spring, the two showed their support by covering each other’s song for Triple J’s “Like a Version.”
From Los Angeles Times ● Jun. 4, 2026
In Group J's other match, second-placed Wales also ran up seven goals as they beat North Macedonia 7-1 with Harry Wilson scoring a hat-trick of set-piece goals.
From Barron's ● Nov. 18, 2025
Next for Wales is Tuesday's trip to North Macedonia, who started their campaign with a 3-0 win over Group J's bottom seeds Liechtenstein.
From BBC ● Mar. 22, 2025
But the most recognizable example is LL Cool J's "Father."
From Salon ● Dec. 30, 2024
But so is the pissed-off expression on Aunt J’s face.
From "Split the Sky" by Marie Arnold
I’m out there in some Artful Dodger, LRG and Evisus with the Js — hood classics, you feel me?
From New York Times ● Jan. 19, 2022
Jackie was for the three Js — John, Jim and Jesse — while Lee was for Lyn.
From Washington Post ● Jul. 11, 2020
Same solid drives, same high, metronomic dribble, same deadening retinue of mid-range Js.
From The New Yorker ● Oct. 25, 2019
With a single letter distinguishing their first names, they're referred to collectively as "the Js" by cast and crew.
From Los Angeles Times ● Mar. 21, 2018
“We’re teammates, so I tolerate you. That doesn’t mean I like you. Besides, Drew and I’ve been carrying your deadweight for two years. All you do is shoot Js that you can’t make.”
From "Here to Stay" by Sara Farizan
Those throaty "j's" and growled "g's" have long found their truest expression in the music that's synonymous with Spain – flamenco.
From The Guardian ● Jun. 19, 2012
There are twenty-four j's in it, and seventeen g's, so you may imagine that it is difficult.
From Five Mice in a Mouse-trap by the Man in the Moon. by Ledyard, Addie
She said that we could find enough to do minding our p's and q's in life, without quarreling over "i's" and "j's"; so the argument ended, and the girls turned their attention to making tea.
From The Chauffeur and the Chaperon by Anderson, Karl
The national song of the Basques, a matter of some dozen stanzas, written principally in "j's," "rr's," and "tz's," takes its theme, if one may trust the Castilian translation, from this symbolic oak.
From Spanish Highways and Byways by Bates, Katharine Lee
The harbor-master pronounced his r's very much like j's.
From The Fourth Estate, vol.1 by Palacio Vald?s, Armando
I love the html and js side of the web, but when it comes to CSS, I can design as well as John McCain can pick a running-mate.
From Forbes ● Aug. 16, 2012
But the Brody kids are remarkably well-cast too, and I like how the script and Morgan Saylor’s performance left it open to interpretation js how much she really did or didn’t believe Carrie.
From Time ● Dec. 19, 2011
He js "much embarrassed," but listens respectfully, then makes a little speech.
From Time Magazine Archive
A scene in which the young man fancies he js in communication with the shade of Millhouser's mother is as embarrassing as any in recent fiction.
From Time Magazine Archive
These were the first steps toward establishing the security which js M.G.'s chief job.
From Time Magazine Archive
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
