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.
During Trump's previous administration, a trade war led to tariffs on hundreds of billions of dollars' worth of goods, disrupting global supply chains. Dan Perry, Newsweek, 3 Jan. 2025 Friday on Truth Social, posting a graphic that boasted his popularity on the platform and the billions of views his official accounts and hashtags associated with him have garnered. Alison Durkee, Forbes, 3 Jan. 2025 Other Biden policies, like the Inflation Reduction Act, devote hundreds of billions of dollars to various industries, usually with the promise of a new jobs boom. James M. Hohman, National Review, 3 Jan. 2025 As has been discussed publicly, Bank of America Stadium hosts more than 40 events per year, which attracts hundreds of thousands of people every year to our region and generates thousands of jobs and billions of dollars in economic impact. Alexandria Sands, Axios, 3 Jan. 2025 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

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Dictionary Entries Near billion

Cite this Entry

“Billion.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/billion. Accessed 18 Jan. 2025.

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

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