Definition of Bk

BK is the common abbreviation for the Burger King chain of fast food restaurants.

Berkelium ( , less commonly ), is a transuranic radioactive chemical element with the symbol Bk and atomic number 97, a member of the actinide and transuranium element series. It is named after the city of Berkeley, California, the location of the University of California Radiation Laboratory where it was discovered in December 1949. This was the fifth transuranium element discovered after neptunium, plutonium, curium and americium.

Burger King, often abbreviated as BK, is a global chain of hamburger fast food restaurants headquartered in unincorporated Miami-Dade County, Florida, United States. The company began in 1953 as Insta-Burger King, a Jacksonville, Florida-based restaurant chain. After Insta-Burger King ran into financial difficulties in 1955, its two Miami-based franchisees, David Edgerton and James McLamore, purchased the company and renamed it Burger King. Over the next half century the company would change hands four times, with its third set of owners, a partnership of TPG Capital, Bain Capital, and Goldman Sachs Capital Partners, taking it public in 2002. In late 2010 3G Capital of Brazil acquired a majority stake in BK in a deal valued at . The new owners promptly initiated a restructuring of the company to reverse its fortunes.