Billion Definition

bĭlyən
billions
noun
billions
The cardinal number equal to 109 .
American Heritage
A thousand millions (1,000,000,000)
Webster's New World
The cardinal number equal to 1012 .
American Heritage

Trillion (a million millions)

Webster's New World
An indefinitely large number.
American Heritage
Synonyms:
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adjective
Amounting to one billion in number.
Webster's New World

Other Word Forms of Billion

Noun

Singular:
billion
Plural:
billions

Origin of Billion

  • French a million million blend of bi- second power bi–1 million

    From American Heritage Dictionary of the English Language, 5th Edition

  • From French billion

    From Wiktionary

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