# billion

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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 periodicals archive ?
Andre Luiten, lead researcher and physics professor, said they have created the world's most accurate thermometer that can measure temperature with a precision of 30 billionth of a degree.
8 billionths of a gram of insulin, whereas cells with no Snapin only released 1.
We need to repeat this iterative scale-down process of dividing the current length into 10 equal parts two more times to get to the billionth part of our initial 100-metre unit.
Put another way, they timed events lasting no longer than ten million billionths of a second.
This is the world of nano - for nanometer, or billionth of a meter - instead of today's world of micro, for micrometer, or millionth of a meter.
The bristles' secret is carbon nanotubes, tiny straw-like molecules just 30 billionths of a meter (30 nm) across.
Physicists can currently cool atoms to a few billionths of a degree, but even this is too hot for certain applications.
Nanotechnology is the study and manipulation of materials on atomic and molecular scales measured in billionths of a meter.

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