There are 3 main definitions of k in English:

k1

Line breaks: k
Pronunciation: /keɪ
 
/

abbreviation

[in combination]
1(In units of measurement) kilo-: a distance of 700 kpc

symbol

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1.1 Chemistry Boltzmann’s constant.

Definition of k in:

There are 3 main definitions of k in English:

K3

Line breaks: K
Pronunciation: /keɪ
 
/

abbreviation

1.1Kelvin(s).
1.2 Computing Kilobyte(s): it uses only 10K of RAM
1.3Kilometre(s): a 10K fun run
1.5King (used especially in describing play in card games and recording moves in chess): declarer overruffed with ♦K and led another spade 18.Ke2
1.6Knit (as an instruction in knitting patterns): K 42 rows
1.7Köchel (catalogue of Mozart’s works): the Sinfonia Concertante, K364
1.8 (also k) informal Thousand (used chiefly in expressing salaries or other sums of money): he earns about £50K a year
[from kilo- 'thousand']

symbol

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The chemical element potassium.
[from modern Latin kalium]

Definition of k in: