billion
//ˈbɪljən//
numeral
1
The number 1,000,000,000 (one thousand million; 10^9).
The world population reached 8 billion in 2022.
2
(British, historical) The number 1,000,000,000,000 (one million million; 10^12).
In British English, a billion historically meant one million million.
Synonym
Noun
billionSingular
billionsPlural
1
A very large but unspecified number or amount.
I have a billion things to do today.