billion

noun

bil·​lion ˈbi(l)-yən How to pronounce billion (audio)
1
US : a number equal to 1,000 million see Table of Numbers
also, British : a number equal to 1,000 milliard see Table of Numbers
2
: a very large number
billion adjective
billionth adjective or noun

Did you know?

How much is a billion? It might depend on whom you ask. Billion was borrowed from French in the late 1600s to indicate the number one million raised to the power of two, or a million million—a number represented by a 1 followed by 12 zeros. However, the French later changed their naming conventions so that a billion became a thousand million (a 1 followed by 9 zeros) and a trillion became a thousand thousand million (or a million million, the old billion). The French have since returned to the older system, but it was this new system that was adopted by American English speakers in the 1800s. In Britain, the newer system has seen increasing use since the 1950s, but the older sense is still sometimes used there as well.

Examples of billion in a Sentence

We could see a billion stars in the sky.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Meanwhile, Elon Musk's SpaceX has already begun reliably transporting astronauts and supplies since 2020 to the space station aboard its Dragon. NASA shelled out billions of dollars to both Boeing and SpaceX to develop the vehicles as part of its commercial crew program. Eric Lagatta, USA TODAY, 19 Dec. 2024 The Biden administration has approved billions of dollars in student loan forgiveness and other relief for borrowers who were defrauded by their school or adversely impacted by their school’s closure. Adam S. Minsky, Forbes, 18 Dec. 2024 Congress raced to avert a government shutdown as soon as the weekend with a sprawling stopgap spending bill that includes billions in hurricane aid along with handouts to farmers and a host of other seemingly unrelated priorities. Dave Goldiner, New York Daily News, 18 Dec. 2024 Honda and Nissan each need to invest billions of dollars in electric vehicles, said Jessica Caldwell, executive director of insights at Edmunds, a market research firm. River Akira Davis, New York Times, 18 Dec. 2024 See all Example Sentences for billion 

Word History

Etymology

French, from bi- + -illion (as in million)

First Known Use

1690, in the meaning defined at sense 1

Time Traveler
The first known use of billion was in 1690

Podcast

Dictionary Entries Near billion

Cite this Entry

“Billion.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/billion. Accessed 22 Dec. 2024.

Kids Definition

billion

noun
bil·​lion ˈbil-yən How to pronounce billion (audio)
1
: a number equal to 1,000 million : 1,000,000,000 see number
2
: a very large number
billion adjective
billionth adjective or noun

More from Merriam-Webster on billion

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!