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.
K is also:
- In chemistry, a symbol for the element potassium
- An abbreviation for ketamine
- In computer technology, an abbreviation for kilobyte
- A symbol for kelvin K in the SI system
- As a prefix k, kilo in the SI system, denoting one thousand. Note that K as in Kelvin is uppercased, whereas k as in kilo is lowercased.
- 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).