Billion
Noun
US
/ˈbɪl.jən/
Level: Easy - A1 (Beginner)
Definition
The number 1,000,000,000 (a thousand million).
Example
"Earth has over 8 billion people."
"They dream of becoming a billionaire someday."
"The company made a profit of 2 billion dollars last year."
Explanation
A billion is a very large number. In most countries, including the US and UK, one billion equals 1,000 million or 1,000,000,000. It’s often used when talking about money, population, or data in science and business.