Definition:Billion/Long Scale

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Definition

Billion is a name for $10^{12}$ in the long scale system:

One billion $= 10^{6 \times 2}$


Also defined as

In the short scale system:

One billion $= 10^{3 \times 2 + 3} = 10^9$


Also see


Linguistic Note

The word billion derives from the prefix bi-, meaning twofold, and million, originating as the number $1 \, 000 \, 000$ to the power of $2$.


Sources