solitary component in a billion. The small fraction for it is 1/1,000,000,000.
1778, from billion + -th (2).
the ordinal number of one billion in counting order
- place 1,000,000,000 in a countable group of things
- one part in a billion equal components
Generally defined, nanotechnology is the field concerned with creating machines along the scale of a nanometer, a billionth of a meter.