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billion

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The definition of a billion is a thousand millions.

(noun)

An example of a billion is $1,000,000,000.

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See billion in Webster's New World College Dictionary

noun

a thousand millions (1,000,000,000)
Brit. trillion (a million millions)

Origin: Fr < bi-, bi- + (mi)llion

adjective

amounting to one billion in number

See billion in American Heritage Dictionary 4

noun

The cardinal number equal to 10⁹.
Chiefly British The cardinal number equal to 10¹².
An indefinitely large number.

Origin:

Origin: French, a million million

Origin: : blend of bi-, second power; see bi-¹

Origin: and million

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Related Forms:

bilˈlion adjective

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