K

The eleventh letter of the Latin alphabet, K comes from the Greek &Kappa or &kappa (Kappa) developed from the Semitic Kap, symbol for an open hand. The Semitic sound value /k/ was maintained in most Classic as well as Modern Languages, although Latin abandoned K almost completely, preferring C. Therefore, the Romance languages have K only in foreign words.

A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z

Kilo represents the letter K in the NATO phonetic alphabet.

K is also:

As k, kilo, an SI prefix meaning 10³ = 1,000 (one thousand) or K, a binary prefix used in computing to mean 2¹⁰ = 1,024.
The symbol for kelvin (K) in the SI system
In chemistry, a symbol for the element potassium (from its latin name kalium)
An abbreviation for ketamine
In the Library of Congress classification, the designation for books about law
The stock symbol for Kellogg Company
In baseball, the abbreviation for strike-out
In Hong Kong, from 2002-now, the informal abbreviation for karaoke.
The simplest system of modal logic (K stands for Kripke).

Note that k as in kilo (SI) is lowercased, whereas K as in kelvin or kilo (computing) is uppercased.

Two-letter combinations starting with K:

ka kb kc kd ke kf kg kh ki kj kk kl km kn ko kp kq kr ks kt ku kv kw kx ky kz