Preheat oven to 425 degrees F (220 degrees C). Mix sugar, cornstarch, salt, and cinnamon, and sprinkle over blueberries. Line pie dish with one pie crust. Pour berry mixture into the crust, and dot with butter. Cut remaining pastry into 1/2 - 3/4 inch wide strips, and make lattice top. Crimp and flute edges.
Potassium. The name is derived from the english word potash. The chemical symbol K comes from kalium, the Mediaeval Latin for potash, which may have derived from the arabic word qali, meaning alkali. Potassium is a soft, silvery-white metal, member of the alkali group of the periodic chart.
an informal abbreviation for one thousand used in expressions where the unit is understood, such as 10K run (10 kilometers) or 700K disk (700 kilobytes or kibibytes). Note that K is also the symbol for the kelvin (see below) and is often used as a symbol for the karat. Also note that the symbol for the metric prefix kilo- (1000) is actually k-, not K-. In computer science, K often represents 210 = 1024 (see below under kibi- and kilo-).