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billion

1. one thousand million: it is written as 1 000 000 000 or 109
2. (formerly, in Britain) one million million: it is written as 1 000 000 000 000 or 1012

Billion

 

(in Russian, usually milliard), a thousand millions; a number represented by the figure 1 followed by nine zeros—that is, the number 109 In certain countries (for example, Germany), a billion is a number equal to 1012.

billion

[′bil·yən]
(mathematics)
The number 109.
In British usage, the number 1012.

billion

One thousand millions, or 1 followed by nine zeros (10 to the 9th power). In long scale usage, billion refers to a million millions, or 1 followed by 12 zeros (10 to the 12th power). See space/time and long scale.
References in classic literature ?
There's always a few millions or billions of young folks around who don't want any better entertainment than to fill up their lungs and swarm out with their torches and have a high time over a barkeeper.
The solid had wrested from the liquid thirty-seven million six hundred and fifty-seven square miles, equal to twelve billions nine hundred and sixty millions of acres.
as if I wouldn't trust you with millions of billions if I had them," cried Rose, scandalised at the mere suggestion.
There are still two billions to be accounted for, which labor cannot buy back and consume.
And yet what is that compared with the distance of the fixed stars, some of which, such as Arcturus, are billions of miles distant from us?
Third, that the charge should contain 400,000 pounds of gun-cotton, which, giving out six billions of litres of gas in rear of the projectile, would easily carry it toward the orb of night.
Twas rehearsed by thee and me a billion years before this ocean rolled.
All these industries were gathered into buildings near by, connected by galleries and railroads with the main establishment; and it was estimated that they had handled nearly a quarter of a billion of animals since the founding of the plant by the elder Durham a generation and more ago.
I wouldn' lay de weight er my finger on um, not f'r ten hund'd thous'n billion dollars, I wouldn't.
But come, suppose that I had the power of passing through solid things, so that I could penetrate my subjects, one after another, even to the number of a billion, verifying the size and distance of each by the sense of FEELING: how much time and energy would be wasted in this clumsy and inaccurate method
By the toll of a billion deaths man has bought his birthright of the earth, and it is his against all comers; it would still be his were the Martians ten times as mighty as they are.
Well, suppose this house, just as it is, placed a few billion miles above a planet, and with nothing else near enough to disturb it: of course it falls to the planet?