k

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Symbol.

Mathematics. a vector on the z-axis, having length 1 unit.

Boltzmann constant.

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Other definitions for k (2 of 8)

K¹

or k

[ key ]

/ keɪ /

noun, plural K's or Ks, k's or ks.

the eleventh letter of the English alphabet, a consonant.

any sound represented by the letter K or k, as in bilk, kit, or sick.

something having the shape of a K.

a written or printed representation of the letter K or k.

a device, as a printer's type, for reproducing the letter K or k.

Other definitions for k (3 of 8)

K²

abbreviation

the number 1000: The salary offered is $20K.

Origin of K

Abbreviation of kilo-

Other definitions for k (4 of 8)

K³

abbreviation

Chess. king.

Physics. Kelvin.

Music. Köchel listing.

kindergarten: a K–12 boarding school.

Real Estate. kitchen.

Other definitions for k (5 of 8)

K⁴

Symbol.

the eleventh in order or in a series.

Computers.

the number 1024 or 210: A binary 32K memory has 32,768 positions.
kilobyte.

Baseball. strikeout; strikeouts.

Physics. kaon.

Biochemistry. lysine.

Chemistry. potassium.

Origin of K

⁴

def. 6 from German Kalium

Other definitions for k (6 of 8)

abbreviation Ecology.

carrying capacity.

Other definitions for k (7 of 8)

abbreviation

Electricity. capacity.

karat.

kilogram; kilograms.

Chess. king.

knight.

knot.

kopeck.

Other definitions for k (8 of 8)

abbreviation

kip; kips.

Knight.

kwacha.

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use k in a sentence

“Please, please do not permit this to happen here in Florida,” wrote Cris K. Smith of East Polk County.
Jeb Bush’s Unseen Anti-Gay Marriage Emails|Jackie Kucinich|January 9, 2015|DAILY BEAST
His monotonous music is, really, like the audio soundtrack to a k-hole.
The Cult of Yung Lean: ‘I’m Building An Anarchistic Society From the Ground Up’|Marlow Stern|January 4, 2015|DAILY BEAST
Only the L, K, and A of the old sign remain stuck to the side of the office.
The Congo's Forgotten Colonial Getaway|Nina Strochlic|December 18, 2014|DAILY BEAST
Maybe giving Deborah K. Jones, our Ambassador to Libya, a 9mm SIG Sauer and a pair of nunchucks.
The GOP Senate: A New Utopia Dawns|P. J. O’Rourke|November 8, 2014|DAILY BEAST

She alleges that he and twenty-or-so named colleagues collectively abused “alcohol, cocaine, mushrooms, Special-K, heroin.”
The Very Rich Should Divorce Very Quietly|Vicky Ward|November 6, 2014|DAILY BEAST
What more could one desire of him, I pray, Than just to hop around and stand for K?
Boys and Girls Bookshelf; a Practical Plan of Character Building, Volume I (of 17)|Various
Had he not meant the Fleet to shove in K. must have made some reference to the second Division, surely.
Gallipoli Diary, Volume I|Ian Hamilton
In writing K. I try to convey the truth in terms which will neither give him needless anxiety or undue confidence.
Gallipoli Diary, Volume I|Ian Hamilton
Well, to steer a middle course between my duty to my force and my loyalty to K. is not so simple as it might seem.
Gallipoli Diary, Volume I|Ian Hamilton
As a fighting unit they are on their last legs and when they will be set upon their feet again Lord K. knows.
Gallipoli Diary, Volume I|Ian Hamilton

British Dictionary definitions for k (1 of 4)

symbol for

kilo(s)

maths the unit vector along the z-axis

British Dictionary definitions for k (2 of 4)

K

/ (keɪ) /

noun plural k's, K's or Ks

the 11th letter and 8th consonant of the modern English alphabet

a speech sound represented by this letter, usually a voiceless velar stop, as in kitten

See five Ks

British Dictionary definitions for k (3 of 4)

K.

abbreviation for

Köchel: indicating the serial number in the catalogue (1862) of the works of Mozart made by Ludwig von Köchel (1800–77)

British Dictionary definitions for k (4 of 4)

symbol for

kelvin(s)

chess king

chem potassium

physics kaon

currency

kina
kip
kopeck
kwacha
kyat

one thousand

computing

a unit of 1024 words, bits, or bytes
(not in technical usage) 1000

abbreviation for

Cambodia (international car registration)

Word Origin for K

(for sense 3) from New Latin kalium; (for sense 6) from kilo-; (for sense 8) from Kampuchea

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 k (1 of 2)

K 1¹

The symbol for the elementpotassium

Medical definitions for k (2 of 2)

K 2²

abbr.

kelvin

Scientific definitions for k

Abbreviation of kelvin

The symbol for potassium.