Nanosecond (noun)

One billionth of a second.

Origin:

From the greek word nanos meaning "dwarf" and the unit of measurement second.

Examples:

1. The speed of light is approximately 300 million meters per nanosecond.
2. A nanosecond is one billionth of a second.
3. The reaction time of the human eye is measured in nanoseconds.
4. Nanoseconds are often used to measure the duration of very short events in physics and electronics.
5. In computer science, the speed of processors are measured in nanoseconds.