billion
Pronunciation:
/ˈbɪljən/noun
Definitions
(modern British & Australian, short scale) a thousand million (logic: 1,000 × 1,000^2): 1 followed by nine zeros, 109; a milliard
(British & Australian, long scale) A million million (logic: 1,000,000^2): a 1 followed by twelve zeros; 1012
An unspecified very large number.
Example: There were billions of people at the concert.