Billiard

In European usage, one billiard equals 1,000,000,000,000,000 = 10¹⁵ = one thousand billion = one American quadrillion.

In Britain, Ireland, and Australia, the word "billiard" has been largely replaced by either "thousand billion" or the American usage of "quadrillion".

See also: number names

See Billiards for the game.