Billion

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Billion

1. One thousand million in the short scale numbering system.

2. One million million in the long scale number system. This number is known, perhaps more commonly, as one trillion.
References in periodicals archive ?
But note that we need a row of 1000 of these square-metre areas to make an area that has 1 square-millimetre as 1 billionth of the total unit-area.
While they demonstrated the method on atoms cooled to one billionth of a degree, they also showed that it should work for atoms hundreds of times cooler, meaning the thermometer will be an invaluable tool for physicists pushing the cold frontier.
The anti-hydrogen atoms created in the experiment were moving at nearly the speed of light and survived only some 40 billionths of a second before colliding with atoms of ordinary matter and annihilating themselves.
A fatal dose is just 100 billionths of a gram, making the toxin one of the most lethal poisons known.
This advanced laser measurement technology (TMS-RC) allows the surface of each disk to be measured to levels below one-half of an angstrom (one angstrom is four billionths of an inch).
Furthermore, less material is needed to do a cholesterol analysis; only about 50 billionths of a gram gives reliable carbon isotope ratios.
At $80,000 per month for a transcontinental T-3 line, the cost today of transporting a single bit is about two nanodollars, or two billionths of a dollar.
The ion beam carves lines as narrow as 150 billionths of a meter.