K comes from the Greek word kilo which means a thousand. The Greeks would likewise show million as M, short for Mega. So if we stay consistent with the Greek abbreviations, then billion would be shown as a letter G (Giga). Think of your computer expressing bytes of memory as kilobyte, megabyte, or gigabyte.

The letter K comes from the Greek letter Κ (kappa), which was taken from the Semitic kaph, the symbol for an open hand.

In classical Latin, the letter C is pronounced like K. Hardly any words use the latter K; even imports from Greek turned kappa into C. A handful of words, such as "kalendae," held onto their K. In general, classical Latin avoided superfluous letters.

The symbolism of K. The « K » concept comes from the ancient Egypt dictionary where the letter K signifies peace, serenity, calm, and harmony. Ka symbolizes vital force maintained by food, represents the principle of life and energy. The king could not proceed to the important acts of worship without his Ka.