billion

//ˈbɪljən//
B2Frequency Level 6Neutral
Visual representation of billion

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.

billion - Deep Vocabulary