[Elamur Dictionary](https://md.dictionary.elamur.ai/free/en/) · [this page in HTML](https://dictionary.elamur.ai/free/en/english/billion/)

[dictionaries](https://md.dictionary.elamur.ai/free/en/) / [English](https://md.dictionary.elamur.ai/free/en/english/) / [B](https://md.dictionary.elamur.ai/free/en/english/b/) / billion

# billion

number (a billion, billions); noun

«billion» in the English dictionary: everyday — its meanings, how the lessons use it, and examples, each with its tree on Mova.

## Everyday

1. A billion is one thousand million: 1,000,000,000. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/B/billion/#m1)
2. Billions means a huge, uncountable-feeling number of things. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/B/billion/#m2)

### In the lessons

In maths lessons a billion is written 1,000,000,000 — a one with nine zeros, or a thousand millions. In science the Earth is about 4.5 billion years old and there are about 8 billion people. In everyday talk «billions» means very many. Phrases: a billion, billions of, two billion.

### Examples

- A billion is a thousand million. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/B/billion/#x1)
- There are about eight billion people in the world. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/B/billion/#x2)
- The Earth is about four and a half billion years old. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/B/billion/#x3)
- Write one billion with nine zeros. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/B/billion/#x4)
- There are billions of stars in our galaxy. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/B/billion/#x5)
- The bridge cost two billion dollars. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/B/billion/#x6)
- I've told you a billion times! [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/B/billion/#x7)
- Michael was ready: he wanted to see how long it took him to do a billion miles. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/B/billion/#x8)

### Note

After a number, no «s»: «three billion people», not «three billions». Use «billions of» only without a number. Today a billion always means 1,000,000,000 (nine zeros); in old British books it once meant a million million. Order: thousand (3 zeros), million (6), billion (9), trillion (12).

## On Mova

- [Trees and pragmatics of «billion» in the school dictionary](https://mova.elamur.ai/free/en/corpora/dictionaries/school/B/billion/): every meaning and example parsed by Mova, with its dependency tree and frames.
- [«billion» in the school dictionary](https://mova.elamur.ai/free/en/dictionaries/school/w/billion.html) on Mova free.