Definition, Meaning & Synonyms
billionth
adjective
/ˈbɪl.jənθ/
Definition
The fractional part that is equal to one divided by a billion.
Examples
- The billionth of a meter is known as a nanometer.
- In the context of time, one billionth of a second is referred to as a nanosecond.
Meaning
One billionth is a term used to denote an extremely small quantity, often used in measurements such as nanotechnology and science, to signify a division of something into a billion equal parts.
Synonyms
- One part in a billion
- 10-9
