picosecond
/ˈpaɪkəˌsɛkənd/
noun
- One trillionth of a second (10⁻¹² seconds), used in science and technology to measure extremely short time intervals.
- A laser pulse can last just a few picoseconds.
- Chemists use picosecond measurements to study fast molecular reactions.
- In a picosecond, light travels only about 0.3 millimeters.